The problem is the current order of the page elements displayed when searching in "containing ..." mode:

1. "Page xxxxxx has been found."
2.  the list of the first 20 results
3. "Results of sister projects"
4. "See (20 previous items | next 20 items)

When there are many brother projects ( #3), we waste time finding the link to the rest of the results and a beginner won't even notice that there is a next page! Try a common word like "lion" or "green".
The order should therefore be this:

1. "Page xxxxxx has been found."
2. the list of the first 20 results
3. "See (20 previous items | next 20 items)
4. "Results of sister projects"

Reported on frwiki: https://fr.wikipedia.org/wiki/Discussion_aide:Apparence_Timeless#Recherche_et_projets_fr%C3%A8res