Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
irene yan » irene a, ren yan
yana hua » wang hua, ya hua, yang hui
thi gong » thi hong, thi mong
gong hui » tong hui, tong shui, wang hui
tan hua » tuan hua, wang hua, tan chia
yan thi » yan zhi, tran thi, dang thi

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 ((yana hua) or (tan hua)) irene yan thi gong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang ((yana hua) OR (tan hua)) irene yan thi gong hui ;.
• Adding a wildcard symbol may retrieve word variants: dong yang ((yana hua) or (tan hua)) irene yan thi gong hui ;*.