Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
ying xiao » dong xiao
zhang dai » zhang wei, zhang yan, zhang lei
fan ying » fan xing, tan ying, jin ying
ran ying » tan ying, jin ying, gao ying
yang dr » yang di, yang d, yang du
dr rene » der rent

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((fan ying) or (ran ying))) or (wang yang)) yang dr rene ying xiao ((zhang dai) or (zhang fan)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((fan ying) OR (ran ying))) OR (wang yang)) yang dr rene ying xiao ((zhang dai) OR (zhang fan)) ;.
• Adding a wildcard symbol may retrieve word variants: ((((fan ying) or (ran ying))) or (wang yang)) yang dr rene ying xiao ((zhang dai) or (zhang fan)) ;*.