Perhaps you should try some spelling variations:
wang klang » wang yang, lang lang
wang liang » wang yang
iii formen » ii formen, die formen, iii form
david dang » david ian, david ng
david mant » david ian, david ma, david malone
formen im » reformen im
hadi » had

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

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