Perhaps you should try some spelling variations:
dong qian » gong qiang, ong kian, dong sin
qian wang » yiqian wang, qian rong, qian yan
fang yuan » wang yuhan, wang yan, meng yuan
das cern » das ferne, das clan
yan clan » das clan, yan yuan
yan guan » gan guan, yan yuan, yang guang
hui test » ai test, api test, i test
wang hui » wang hua, wang zhi, wang wei
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong qian wang hui test ((yan guan) or (((((yan clan) or (fang yuan))) or (das cern)))) hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong qian wang hui test ((yan guan) OR (((((yan clan) OR (fang yuan))) OR (das cern)))) hong yu ;.
• Adding a wildcard symbol may retrieve word variants: dong qian wang hui test ((yan guan) or (((((yan clan) or (fang yuan))) or (das cern)))) hong yu ;*.