Use of .OR

@archaeous @shantanukumar847 , really thanks for the help

Finally, I got it

Apart from your help, I also use this post’s code from JD, and the setFilter example in the api that is really clear
https://www.wix.com/velo/forum/coding-with-velo/using-an-or-operator-to-filter-by-multiple-fields-in-a-dataset-at-once-for-a-repeater

// API Reference: https://www.wix.com/velo/reference/api-overview/introduction
// “Hello, World!” Example: https://learn-code.wix.com/en/article/1-hello-world

import wixData from "wix-data";



$w.onReady(() => {
});

let debounceTimer;

export function input1_keyPress(event) {
 if (debounceTimer) {
    clearTimeout(debounceTimer);
    debounceTimer = undefined;
 }
    debounceTimer = setTimeout( () => {
        filter($w('#input1').value);
 }, 200);
}

let lastFilterTitle;

function filter(title) {
 
 if (lastFilterTitle !== title) {

 let filter = wixData.filter().contains('claveProducto',title)
 .or(wixData.filter().contains('clave1Producto',title));

       $w('#dataset1').setFilter(filter)

    lastFilterTitle = title; 
 
 }

}