pipeSearch.html

<tr *ngFor="let post of posts | search: 'title': 'content': postSearch">

pipeSearch.ts

transform(value: any, field1: string, field2: string, search: string)
{
    if(search == "") {
        return value;
    }

    return value.filter((res) => {
        return res[field1].includes(search) || res[field2].includes(search);
    })
}