verb
vouch
VOUCH/vˈaʊtʃ/
Give personal assurance that someone is reliable or something is true.
The trusted colleague vouches for her as the employer offers the cashbox keys.

Etymology
Old French vocher meant to call or summon; early English use included summoning someone into court to prove a title. The meaning shifted through supporting a claim with evidence to personally assuring its truth or reliability.
In context
I'm talking about Google Search specifically. I can't really vouch for the other search engines. So other search engines might have different trade-offs and might not necessarily render all pages.