Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
chen shang » chen shuang, cheng zhang, chen yang
shang john » change john, shang jin, shang jen
john song » john wong, john bonn, john ngosong
yan guan » gan guan, yan yuan, yang guang
fei chen » frei chen, jui chen, yi chen
song shu » cong shu, song shin, tong shui
nan yan » nan ya, wang yan, qian yan

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 OR lang) ((((nan yan) OR (yan guan))) OR (wang yuhan)) fei chen shang john song shu ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or lang) ((((nan yan) or (yan guan))) or (wang yuhan)) fei chen shang john song shu ;*.