Perhaps you should try some spelling variations:
wang ban » wang yan, wang yang, bang bang
wang dan » wang yan, wang yidan, wang yang
gene one » gene clone, gene gene, gene we
gene set » gene sets, game set, gene we
tan one » than one, can one, tan hong
man one » many one, can one, than one
yan a » can a, yan _, jan a

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang ban) OR (wang dan)) yan a ((gene one) OR (gene set)) ((tan one) OR (man one)) saul ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang ban) OR (wang dan)) yan a ((gene one) or (gene set)) ((tan one) or (man one)) saul ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang ban) OR (wang dan)) yan a ((gene one) or (gene set)) ((tan one) or (man one)) saul ;*.