Perhaps you should try some spelling variations:
p'ing kong » king kong, sing kong, ming kong
chen chih » chen chiu, chen zhi, chou chih
yang yang » wang yang, wang yan
yan yuan » fang yuan, nan yan, yan clan
yan guan » gan guan, yang guang, yihan guan
quan guo » quan guan
kong bin » dong bin, song bing, kong eiu
yi chen » jui chen

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: lang ((((((yan yuan) OR (yan guan))) OR (yang yang))) OR (quan guo)) yi chen chih p'ing kong bin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((((((yan yuan) OR (yan guan))) or (yang yang))) or (quan guo)) yi chen chih p'ing kong bin ;~".
• Adding a wildcard symbol may retrieve word variants: lang ((((((yan yuan) OR (yan guan))) or (yang yang))) or (quan guo)) yi chen chih p'ing kong bin ;*.