Perhaps you should try some spelling variations:
david dang » david ian, david mant, david ng
yang zili » yang dali, yang li
dang hari » dang hai
wan wang » wen wang, yan wang, wang yang
yang iii » klang iii, zwang iii, yang di
yang xi » yang di, yang yi, yang jui
2 david » 2.1 david, 210 david, 226 david
form 2 » form _, form a, form i

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "wan wang ((yang iii) OR (((yang zili) OR (yang xi)))) form 2 david dang hari ;~".
• Adding a wildcard symbol may retrieve word variants: wan wang ((yang iii) OR (((yang zili) OR (yang xi)))) form 2 david dang hari ;*.