Perhaps you should try some spelling variations:
young john » kong john, wong john, young jean
guan huan » tuan hua
quan guan » quan guo, yan guan
jie zhang » jia zhang, li zhang, bin zhang
zhang kim » zhang xin, kang kim, zhang i
gan guan » yan guan, fan guon, gui guan
wang » wing, wan, lang

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 yan ((guan huan) OR (((quan guan) OR (gan guan)))) jie zhang kim young john ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan ((guan huan) or (((quan guan) OR (gan guan)))) jie zhang kim young john ;~".
• Adding a wildcard symbol may retrieve word variants: wang yan ((guan huan) or (((quan guan) OR (gan guan)))) jie zhang kim young john ;*.