Perhaps you should try some spelling variations:
dong yang » dong hoang, yang yang, dan yang
wang yang » wang yan, wang liang, wang yanling
hua irene » hua ren
yang min » yang mind, yang jin, yang lin
tang min » chang min, sang minh, yang mind
hong yu » wong yue
yi hua » li hua, ya hua, yi hui

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) OR (wang yang)) yi hua irene ((yang min) or (tang min)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (wang yang)) yi hua irene ((yang min) OR (tang min)) hong yu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) OR (wang yang)) yi hua irene ((yang min) or (tang min)) hong yu ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) OR (wang yang)) yi hua irene ((yang min) or (tang min)) hong yu ;*.