Perhaps you should try some spelling variations:
truong thanh » truong tran, tran thanh, truong xuan
luong thanh » long thanh
yuan wang » yuan kang, yuan chang, qian wang
yan wang » yang yang, qian wang, yan liang
jane o » jane e
jan a » jane a, can a, jan m
sau » saur, sabu, saul

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: ((yan wang) OR (yuan wang)) ((jan a) OR (jane o)) gene ((luong thanh) OR (truong thanh)) one sau ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan wang) or (yuan wang)) ((jan a) or (jane o)) gene ((luong thanh) OR (truong thanh)) one sau ;~".
• Adding a wildcard symbol may retrieve word variants: ((yan wang) or (yuan wang)) ((jan a) or (jane o)) gene ((luong thanh) OR (truong thanh)) one sau ;*.