Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yang yan » wang yan, yang fan, yang yao
di rene » di rete, i rene, ii rene
dr rene » der rent
yang li » yang lin, yang di, yang xi
li hong » le hong, li cong, li rong
hong yu » wong yue
dean » dewan, jean, den

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((((yang yan) or (yang yang))) or (yang dean)) ((di rene) or (dr rene)) yang li hong yu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((((yang yan) OR (yang yang))) OR (yang dean)) ((di rene) OR (dr rene)) yang li hong yu ;.
• Adding a wildcard symbol may retrieve word variants: wang ((((yang yan) or (yang yang))) or (yang dean)) ((di rene) or (dr rene)) yang li hong yu ;*.