Perhaps you should try some spelling variations:
drei formen » zwei formen, durch formen
wang liang » wang yang
die formen » die folgen
der formen » der reformen, der form
john david » cohen david, sahn david, juan david
wan wang » wen wang, yan wang, wang yang
david ng » david g, david n, david a
ng tan » hong tan, wing tan

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: wan wang liang ((((drei formen) OR (die formen))) OR (der formen)) john david ng tan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan wang liang ((((drei formen) OR (die formen))) or (der formen)) john david ng tan ;~".
• Adding a wildcard symbol may retrieve word variants: wan wang liang ((((drei formen) OR (die formen))) or (der formen)) john david ng tan ;*.