You got it backwards. This is the opposite of the problem I and many other people tend to have with search engines lately. I do not want the damn thing to combine words, exclude unpopular ones, and search for synonyms without me telling it to explicitly. As little as you can semantics please.

If Google wants to group words by semantics, they should have a semantical grouping operator. For example "shirts (without stripes)". What if I am looking for a song text with these exact words in random positions?

If what author wants was implemented, it would make my experience with Google even worse, unless it could think for me also. But then why would it need me in the first place?