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 mant, david ng
wang yang » wang yan, wang liang, wang yanling
david ian » david n
yan wang » yuan wang, yang yang, qian wang
yang iii » klang iii, yang zili, zwang iii

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: yan wang yang iii formen beim ((david dang) OR (((david ian) OR (david a)))) (hai OR hadi) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yan wang yang iii formen beim ((david dang) or (((david ian) OR (david a)))) (hai or hadi) ;~".
• Adding a wildcard symbol may retrieve word variants: yan wang yang iii formen beim ((david dang) or (((david ian) OR (david a)))) (hai or hadi) ;*.