Perhaps you should try some spelling variations:
david dang » david ian, david mant, david ng
wang yang » wang yan, wang liang, wang yanling
yang zili » yang dali
dang hari » dang hai
yang iii » klang iii, zwang iii, yang di
yang li » yang lin, yang di, yang xi
form i » form _, reform i
form a » form _, reform a

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 ((yang iii) OR (((yang zili) OR (yang li)))) ((form i) OR (form a)) david dang hari ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang ((yang iii) or (((yang zili) or (yang li)))) ((form i) or (form a)) david dang hari ;*.