Perhaps you should try some spelling variations:
among african » among africans, among american, among mexican
gene yang » gene bank
jie meng » die menge, jie song, lin meng
jui meng » juan meng, mui teng
a gene » a genre, a gender, a gentle
ya a » a a, y a, ye a
dong » doing, long, done

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong sin) or (among african)) ya a gene yang ((jie meng) OR (jui meng)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong sin) OR (among african)) ya a gene yang ((jie meng) OR (jui meng)) shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong sin) or (among african)) ya a gene yang ((jie meng) OR (jui meng)) shu ;".
• Adding a wildcard symbol may retrieve word variants: ((dong sin) or (among african)) ya a gene yang ((jie meng) OR (jui meng)) shu ;*.