Search ListView with Filter does not show any results

I have a ListView with an EditText arriva that is used to filter the elements in the ListView, only when entering a character, everything is deleted from the ListView and when I erase what I have in the EditText everything is shown again in the ListView, this is the code I have so far where I have the ListView full

public void populatingListView()
{
    try{
        AndroidDatabase myDB = new AndroidDatabase(contx);

        myDB.Open();
        productList = myDB.getProduct();
        Log.i(TAG, productList.toString());
        myDB.close();

        Log.i(TAG, productList.toString());

        adapterProducts = new ProductAdapter(this.contx,productList);

        inventoryListView.setAdapter(adapterProducts);
    }
    catch(Exception e){
        Log.i(TAG,"Error de llenado listview: "+ e.getMessage());
    }
}

where I do the search

searchBox.addTextChangedListener(new TextWatcher(){
        public void afterTextChanged(Editable s) {
            if (s.length() >= SEARCH_LIMIT) {
                search();
            }
        }
        public void beforeTextChanged(CharSequence s, int start, int count, int after){}
        public void onTextChanged(CharSequence s, int start, int before, int count){}
    });

Here is the method I use above

private void search() {
    String search = searchBox.getText().toString();

    if (search.equals("/demo")) {
        testAddProduct();
        searchBox.setText("");
    } else if (search.equals("/clear")) {
        DatabaseExecutor.getInstance().dropAllData();
        searchBox.setText("");
    }
    else if (search.equals("")) {
        populatingListView(productCatalog.getAllProduct());
    } else {
        List<Product> result = productCatalog.searchProduct(search);
        populatingListView(result);
        if (result.isEmpty()) {

        }
    }
}