Perhaps you should try some spelling variations:
wang liang » wang yang
liang dali » liang dan, liang li, yang dali
form dier » form der, form einer, form des
david ian » david a, david n
wan wang » wen wang, yan wang, wang yang
form die » formel die, formen die, former die
ian hai » dang hai

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 liang dali ((form die) or (form dier)) david ian hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan wang liang dali ((form die) OR (form dier)) david ian hai ;*.