typeahead show results

I have a inputText that I want to autocomplete with a list of words that are read from a bd table using ajax using typeahead.js .

The problem I have is that although by ajax I get all the results that contain the input text, they do not show me all, sometimes I show one, another two ...

The javascript code is as follows:

$('#txtEmpresa .typeahead').typeahead({
      highlight: true,
      hint:false,
      minLength: 3,
    },
    {
      name: 'empresas',
      display: 'empresas',
      source: function(query, processSync, processAsync) {
                return $.ajax({
                    url: '../autocomplete_empresas',
                    type: 'GET',
                    data: {
                        query: query
                    },
                    dataType: 'json',
                    success: function(empresas) {                        
                        return processAsync(empresas);
                    }
                });
            },
       templates: {
           header: '<h3 class="bg-dark bg-font-dark">Empresas</h3>',
            suggestion: function (data) {
                return '<p>'+ data.nombre + '</p>';
            }
        }
    }

In the browser I see that 5 objects arrive by ajax and if I put suggestion:function(data){console.log} it shows me for example only two.

Does anyone know why it can be?