Perhaps you should try some spelling variations:
mendling jan » eldring jan, selling jan
gene gene » gene meme, gene one, one gene
gene set » gene sets, game set
can only » can one
gene we » gene w, gene one
jan a » jane a, can a, jan m
lang » land, long
saul » paul, saur, raul

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: lang mendling jan a ((((gene we) OR (gene set))) or (gene gene)) can only saul ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang mendling jan a ((((gene we) OR (gene set))) OR (gene gene)) can only saul ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang mendling jan a ((((gene we) OR (gene set))) or (gene gene)) can only saul ;*".