Perhaps you should try some spelling variations:
david dang » david mant, david ng
wang klang » wang liang, wang yang, lang lang
klang iii » klang die, zwang iii
david ian » david a, david n
wan wang » wen wang, yan wang, wang yang
iii form » iii from
form i » form _, form a, reform i

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan wang klang iii form i ((david dang) OR (david ian)) (hai or haji) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan wang klang iii form i ((david dang) OR (david ian)) (hai OR haji) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan wang klang iii form i ((david dang) OR (david ian)) (hai or haji) ;*".