Perhaps you should try some spelling variations:
wang dan » wang yan, wang ban, wang yidan
gene one » gene clone, gene gene, gene we
gene set » gene sets, game set, gene we
dan yan » dan yang, nan yan, wang yan
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.

• Performing a fuzzy search may retrieve terms with similar spellings: wang dan yan a ((gene one) or (gene set)) ((tan one) or (man one)) saul ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang dan yan a ((gene one) OR (gene set)) ((tan one) OR (man one)) saul ;*.