Hi Kristina. I won't try to address your first question sorry, but the second one was so bizarre that I tried it myself. It happened again. This time, not surprisingly, your question with the same title shows up first, but the other suggestions are indeed all fully or partly in French. There don't seem to be any particular repeated words. Here is a screenshot to confirm.
Maybe this will help to track down what's happening.
Edited to add: It didn't seem to make a difference that you categorised as The Treehouse but I used Genealogy Help.
Also, I now notice that à (French for "to") appears in each suggestion. Your title has the word "a" in it, but with no accent.
If I leave "a" out and make the title "What to do with abandoned profile from 2009 with only name?", the suggestions are quite different and all in English. Two of them contain the word "abandoned", but two more don't seem relevant at all.