Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
yang wang » yang yang, yan wang, yang guang
hua rene » hua ren, juan rene
nhan thi » phan thi, ha thi, nga thi
tran thi » trang thu
yan thi » yan zhi, dang thi, phan thi
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong yang wang hua rene ((((yan thi) OR (nhan thi))) or (tran thi)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang wang hua rene ((((yan thi) OR (nhan thi))) OR (tran thi)) hong yu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang wang hua rene ((((yan thi) OR (nhan thi))) or (tran thi)) hong yu ;".
• Adding a wildcard symbol may retrieve word variants: dong yang wang hua rene ((((yan thi) OR (nhan thi))) or (tran thi)) hong yu ;*.