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 » juan rene
tran thi » trang thu
hua ren » hua chen
yan thi » dang thi, nhan thi, phan thi
yan zhi » yan zi, wang zhi
hong yu » wong yue

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: dong yang wang ((hua rene) OR (hua ren)) ((((yan thi) OR (tran thi))) OR (yan zhi)) hong yu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang wang ((hua rene) OR (hua ren)) ((((yan thi) or (tran thi))) or (yan zhi)) hong yu ;~".
• Adding a wildcard symbol may retrieve word variants: dong yang wang ((hua rene) OR (hua ren)) ((((yan thi) or (tran thi))) or (yan zhi)) hong yu ;*.