Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang
gang hari » dang hai
tan chia » tuan china, than china, can china
dan yang » daun yang, tan yang, yang yang
tan hua » tuan hua, wang hua, tan puay
yang li » yang lin, yang di, yang xi
li gang » liu gang, ii gang, i gang

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: ((wang yang) OR (wang yanling)) ((tan hua) OR (tan chia)) dan yang li gang hari ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (wang yanling)) ((tan hua) OR (tan chia)) dan yang li gang hari ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (wang yanling)) ((tan hua) OR (tan chia)) dan yang li gang hari ;*.