Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
wang wang » wang yang, wang liang, wang yan
pham thai » pham thi
hua rene » hua ren, juan rene
tran thi » trang thu
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: yuan wang wang hua rene ((pham thai) or (tran thi)) ((hong ghi) OR (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang wang hua rene ((pham thai) OR (tran thi)) ((hong ghi) OR (hong hai)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan wang wang hua rene ((pham thai) or (tran thi)) ((hong ghi) OR (hong hai)) ;*".