We were previously checking for matching with each search term
independently. Ex searching for "felix malfait" we were searching for
correspondances with "felix" and "malfait".
As a result record A with name "Marie-Claude Mala" and email
"ma.lala@email.com" had a biggest search score than record B "Felix
Malfait" with email felix@email.com for search "felix ma":
for record A we had 0 match with felix and 3 matches with "ma" ("marie",
"mala", "ma")
for record B we had 1 match with felix and 1 match with "ma" (with
"malfait").
So we want to give more weight to a row that would combine matches with
both terms, considering "felix malfait" altogether.