Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
zhang hai » zhang dai, shang hai, zhang han
tan ying » fan ying, tan yang, tan yong
ran ying » fan ying, jin ying, gao ying
ying jia » ying jin, jing jia, jing ji
ping jia » jing jia, jing ji, ying jin
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: ((((tan ying) or (ran ying))) or (wang yang)) yang dr rene ((ying jia) OR (ping jia)) zhang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tan ying) OR (ran ying))) OR (wang yang)) yang dr rene ((ying jia) OR (ping jia)) zhang hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tan ying) or (ran ying))) or (wang yang)) yang dr rene ((ying jia) OR (ping jia)) zhang hai ;".
• Adding a wildcard symbol may retrieve word variants: ((((tan ying) or (ran ying))) or (wang yang)) yang dr rene ((ying jia) OR (ping jia)) zhang hai ;*.