Perhaps you should try some spelling variations:
mark david » mare davide, parker david
bank david » black david, bank ravi, park david
young ghi » young choi, hong ghi, young get
lang tan » liang tan, lang lang, tang tang
tan yang » dan yang, tan ying, tan yong
a1 gene » a gene, 11 gene, l1 gene
1 gene » 11 gene, l1 gene, _ gene

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: lang tan yang ((1 gene) OR (a1 gene)) ((bank david) OR (mark david)) young ghi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang tan yang ((1 gene) OR (a1 gene)) ((bank david) or (mark david)) young ghi ;~".
• Adding a wildcard symbol may retrieve word variants: lang tan yang ((1 gene) OR (a1 gene)) ((bank david) or (mark david)) young ghi ;*.