Perhaps you should try some spelling variations:
formen beim » reformen beim, formen im, forschen beim
iii formen » ii formen, die formen, iii form
david dang » david ian, david mant
yang yang » wang yang, wang yan
yan wang » yuan wang, qian wang, yan liang
yang iii » klang iii, yang zili, zwang iii
david ng » david g, david n, david a

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) or (yang yang)) yang iii formen beim ((david dang) or (david ng)) (hadi OR had) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan wang) OR (yang yang)) yang iii formen beim ((david dang) OR (david ng)) (hadi OR had) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan wang) or (yang yang)) yang iii formen beim ((david dang) or (david ng)) (hadi OR had) ;*".