Forum Search option bug
They are very aware about the issue and even made a sticky thread with suggestions for searching: https://forum-en.gw2archive.eu/forum/support/bugs/Searching-the-Forums
Once they explained why it hasn’t been fixed so far and, ironically, I can’t find that post now :P But to summarize the thing is the software used is no longer supported as the creator stopped supporting it, and nobody at Anet has been able to fix it as it’s a completely different framework that nobody at Anet knows about. They have said they are looking for an alternative.
This guys made the forum software
“The Fangamer Forum is an advanced forum software package we wrote from scratch for the Starmen.Net Forum. We recently licensed the software to ArenaNet for use in their Guild Wars Support Forum.”
Fight the queens
Yup, but they have stopped supporting it if I recall right.