Perhaps you should try some spelling variations:
david dang » david ian, david mant
yang dali » bang dai, yang all, yang zili
wan wang » wen wang, yan wang, wang yang
david ng » david g, david n, david a
yang li » yang lin, yang xi, yang yi
form 2 » form _, form a, form i
hari » hard, hadi, haji

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