Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
shang hai » shang kai, dang hai, chang ha
yang lin » wang lin, yang li, yang liang
yang jin » yang jie, yang jun, ying jin
e gene » _ gene
a gene » a genre, a gender, a gentle
yan k » jan k, yan _, yan 4

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhang yan k ((e gene) OR (a gene)) ((yang lin) or (yang jin)) ((hong w) or (shang hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yan k ((e gene) OR (a gene)) ((yang lin) OR (yang jin)) ((hong w) OR (shang hai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang yan k ((e gene) OR (a gene)) ((yang lin) or (yang jin)) ((hong w) or (shang hai)) ;".
• Adding a wildcard symbol may retrieve word variants: zhang yan k ((e gene) OR (a gene)) ((yang lin) or (yang jin)) ((hong w) or (shang hai)) ;*.