Perhaps you should try some spelling variations:
des ansatzes » des einsatzes, des datensatzes, des gesetzes
yuan chang » yuan cheng, huang chang, han chang
yan zhang » bin zhang, han chang, hao zhang
zhong tai » hong tan, hong hai
zhong zhi » zhang zhi, hong ghi
thing ji » thing _, jing ji, thing 3
wang » wing, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or wan) ((yan zhang) or (yuan chang)) des ansatzes thing ji ((zhong tai) OR (zhong zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wan) ((yan zhang) OR (yuan chang)) des ansatzes thing ji ((zhong tai) OR (zhong zhi)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) ((yan zhang) or (yuan chang)) des ansatzes thing ji ((zhong tai) OR (zhong zhi)) ;*".