Perhaps you should try some spelling variations:
david dang » david ian, david mant, david ng
yan liang » yang liang, wang liang, you liang
des david » de david, hess david, deng david
dang hari » dang hai
wan wang » wen wang, yan wang, wang yang
wang lin » wang li, wang qin, yang lin
form des » form der, reform des, formen des

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 ((wang lin) or (yan liang)) form des david dang hari ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan wang ((wang lin) OR (yan liang)) form des david dang hari ;*.