Perhaps you should try some spelling variations:
yang wang » yang yang, yan wang, yang guang
yuan wang » yan wang, yuan kang, yuan chang
liang hua » wang hua, liang sun, liang zhu
hua irene » hua ren
dang thi » dang hai
yan thi » yan zhi, tran thi, nhan 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: ((yang wang) OR (yuan wang)) liang hua irene ((yan thi) or (dang thi)) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang wang) OR (yuan wang)) liang hua irene ((yan thi) OR (dang thi)) hong yu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang wang) OR (yuan wang)) liang hua irene ((yan thi) or (dang thi)) hong yu ;".
• Adding a wildcard symbol may retrieve word variants: ((yang wang) OR (yuan wang)) liang hua irene ((yan thi) or (dang thi)) hong yu ;*.