Perhaps you should try some spelling variations:
wang planning » range planning, land planning, kong planning
planning can » planning chain, planning case, planning land
yang yang » wang yang, wang yan
tan ying » fan ying, ran ying, tan yang
kim song » kim young, kim eung
song hai » hong hai, shang hai, dang hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang planning can china ((tan ying) OR (yang yang)) kim song hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang planning can china ((tan ying) or (yang yang)) kim song hai ;*.