Question / Suggestion Search forums for multiple words

Many times I think I could find an answer in the forums instead of bugging support. But I cannot find a way to search for multiple terms.
i.e. I am looking for posts with VPS and FIREWALL. This results in a huge search that you have to read all the posts.

When I put in VPS FIREWALL I get all posts with either word.

I have tried various ways, nothing works, all give the same results.

VPS FIREWALL
"VPS FIREWALL"
+VPS +FIREWALL
VPS + FIREWALL
VPS & FIREWALL