Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan yang » dan yang, yin yang
jeong shu » jeong su
gong min » song min, gong meng, song ming
jong min » song min, song ming, cog min
yang du » yang di, yang d, yang mu
du l » xu l, de l, dr l

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 yidan yang du l ((gong min) OR (jong min)) ((jeong shu) OR (cong shu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yidan yang du l ((gong min) or (jong min)) ((jeong shu) OR (cong shu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yidan yang du l ((gong min) or (jong min)) ((jeong shu) OR (cong shu)) ;*.