[mbirth]

If it works anything like with the plain Google search, the modifier only applies to text directly following the colon.

E.g.:

  intitle:door

will find all videos with "door" in their title.

  intitle:"prehung door"

will find all videos where these two words in exactly that order are mentioned in the title.

So to have it search for all words in the title, you'd have to do a search for:

  intitle:attaching intitle:a intitle:prehung intitle:door

[mgdlbp]

Or use,

  allintitle: attaching a prehung door

But it seems that allintitle can only be used at the beginning of a query, so there's no way to combine it with non-title keywords.

Engines supporting parentheses like Reddit's or Elasticsearch prevail here:

  title:(attaching a prehung door)

But for some reason that doesn't work in Wikipedia's search, even though CirrusSearch is based on Elasticsearch.