DataTables - Disable Smart Search - r

Question

I searched the documentation, but when applying it to my api it didn't work... I need to disable DataTables smart search. Insert "smart": false at startup as below:
var table = $('table#tbitens').DataTable({
"ajax" : "/api/v1/get/itens/dtItem?baixado=" + baixado,
"deferRender": true,
"processing": true,
"serverSide" : true,
"destroy": false,
"scrollX": "100%",
"scrollY": "50vh",
"scrollCollapse": true,
"stateSave": true,
select: {
style: 'single'
},
"search": {
"smart": false
},
Imagem do sistema de busca
In the search button I tried these two ways, the one commented on and the one on the top line, but without success. If anyone can help, I appreciate it, I'm new in the area and I'm still in the learning process. Trying to solve this task since Monday.
//Botão pesquisar
$('#btnPesquisarItem').on('click', function(){
var otable = $('#tbitens').DataTable();
var collection = $("input.column_filter");
collection.each(function() {
if ($(this).val().trim() != ''){
otable.columns($(this).parents('tr').attr('data-column')).search("^" + $(this).val() + "$", true, false, true).draw();
// original: otable.columns($(this).parents('tr').attr('data-column')).search($(this).val().trim());
}
});
HTML
<div class="tab-content" id="tabConteudo">
<!-- FILTROS -->
<div class="tab-pane fade" id="pesquisar" role="tabpanel" aria-labelledby="pesquisar-tab">
<div class="table-responsive p-2">
<div class="row">
<form id="formitens" class="form-horizontal" method="POST" style="margin: 10px">
<div class="col-sm-4">
<table style="width: 67%; margin: 0 auto 2em auto;">
<tbody>
<tr id="filter_col0" data-column="1">
<td>Empresa</td>
<td align="center"><input type="text" class="column_filter" id="col1_filter"></td>
</tr>
<tr id="filter_col1" data-column="2">
<td>Filial</td>
<td align="center"><input type="text" class="column_filter" id="col2_filter"></td>
</tr>
<tr id="filter_col2" data-column="3">
<td>Item</td>
<td align="center"><input type="text" class="column_filter" id="col3_filter"></td>
</tr>
<tr id="filter_col3" data-column="4">
<td>Agregado</td>
<td align="center"><input type="text" class="column_filter" id="col4_filter"></td>
</tr>
<tr id="filter_col4" data-column="5">
<td>Chapa</td>
<td align="center"><input type="text" class="column_filter" id="col5_filter"></td>
</tr>
<tr id="filter_col5" data-column="6">
<td>Descrição</td>
<td align="center"><input type="text" class="column_filter" id="col6_filter"></td>
</tr>
<tr id="filter_col6" data-column="7">
<td>Conta</td>
<td align="center"><input type="text" class="column_filter" id="col7_filter"></td>
</tr>
<tr id="filter_col7" data-column="8">
<td>Classe</td>
<td align="center"><input type="text" class="column_filter" id="col8_filter"></td>
</tr>
<tr id="filter_col8" data-column="9">
<td>Centro</td>
<td align="center"><input type="text" class="column_filter" id="col9_filter"></td>
</tr>
</tbody>
</table>
</div>
</form>
<div class="col-sm-4">
<button type="submit" id="btnPesquisarItem" class="btn btn-default">
<span class="glyphicon glyphicon-search"></span> Pesquisar
</button>
<button type="button" id="btnLimparPesquisa" class="btn btn-default">
<span class="glyphicon glyphicon-remove"></span> Limpar pesquisa
</button>
</div>
</div>
</div>
</div>
<!-- ITENS -->
<div class="tab-pane fade show active" id="itens" role="tabpanel" aria-labelledby="itens-tab">
<div class="table-responsive p-2">
<div class="panel-header p-1">
<div class="row">
<div class="col-sm-1">
<a class="tip btn btn-sm btn-success" data-container="body" data-toggle="popover" data-content="Insere um novo item" th:href="#{/itens/add/}"
sec:authorize="hasAnyAuthority('Administrador', 'Aquisições')">
<span class="glyphicon glyphicon-plus"></span>
</a>
</div>
<div class="col-sm-4" sec:authorize="hasAnyAuthority('Administrador', 'Movimentações')">
<select id="movimentacoes" autofocus="autofocus">
<option value="" disabled selected>Selecione um item para movimentar</option>
</select>
</div>
<div class="col-sm-2">
<div class="form-group form-check">
<input type="checkbox" class="form-check-input" id="verBaixados">
<label class="form-check-label" for="exampleCheck1">Exibir Itens Baixados</label>
</div>
</div>
</div>
</div>
<table id="tbitens" class="table table-sm table-hover table-striped table-bordered" style="width:100%">
<thead>
<tr>
<th>ID</th>
<th>Empresa</th>
<th>Filial</th>
<th>Item</th>
<th>Agregado</th>
<th>Chapa</th>
<th>Descrição</th>
<th>Conta</th>
<th>Classe</th>
<th>Centro</th>
<th:block th:each="area : ${areasConts}">
<th th:text="#{general.cost} + ' ' + ${area.descricao}">Custo</th>
<th th:text="#{general.depreciation} + ' ' + ${area.descricao}">Depreciação</th>
</th:block>
<th></th>
</tr>
</thead>
</table>
</div>
</div>
</div>