Perhaps you should try some spelling variations:
young john » kong john, young jean
zhang kim » zhang xin, kang kim, zhang i
guan huan » gan guan, quan guan
wong john » wrong john, kong john, longo john
wang gan » wang yan, wang ban, wang dan
tuan hua » tan hua, tuan vu, yuan hui
li zhang » _ zhang

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