Perhaps you should try some spelling variations:
truong thanh » luong thanh, tran thanh, truong xuan
truong tran » truong xuan, tung tran, truong truong
yang liang » wang liang, yan liang, yang yang
qian yang » qian yan, qian wang, qian rong
done sau » done so, done a, done hu
a gene » a genre, a gentle, a geneve

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

• Performing a fuzzy search may retrieve terms with similar spellings: qian yang liang ((a gene) OR (a gender)) ((truong thanh) or (truong tran)) done sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: qian yang liang ((a gene) OR (a gender)) ((truong thanh) OR (truong tran)) done sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "qian yang liang ((a gene) OR (a gender)) ((truong thanh) or (truong tran)) done sau ;".
• Adding a wildcard symbol may retrieve word variants: qian yang liang ((a gene) OR (a gender)) ((truong thanh) or (truong tran)) done sau ;*.