Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
yang zili » yang dali, yang li
gene bank » gene banks, one bank, genomen bank
aid young » david young, kim young, all young
die bank » die banken
a young » _ young

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang zili ((gene bank) or (die bank)) ((aid young) OR (a young)) let ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang zili ((gene bank) OR (die bank)) ((aid young) OR (a young)) let ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang zili ((gene bank) or (die bank)) ((aid young) OR (a young)) let ;*".