Perhaps you should try some spelling variations:
former die » formel die, formen die, forme de
zwang iii » zugang iii, klang iii
form die » formel die, formen die, form der
david ng » david g, david n, david a
ng hai » dang hai, hong hai
wang » wing, wan, lang
zwang » zwing, zwan, zlang
yang » lang

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: wang yanling ((zwang iii) OR (yang di)) ((form die) OR (former die)) david ng hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yanling ((zwang iii) or (yang di)) ((form die) OR (former die)) david ng hai ;~".
• Adding a wildcard symbol may retrieve word variants: wang yanling ((zwang iii) or (yang di)) ((form die) OR (former die)) david ng hai ;*.