Perhaps you should try some spelling variations:
van velzen » van veen
wang yuhan » wang luhang, wang yan, wang yidan
tran luong » tran phuong
trang van » trang vang, frans van
velzen a » ellen a, helen a
ren yuan » ren yan, meng yuan, wei yuan
tan long » tan hong, tan kong, tan yong

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: trang van velzen a ((ren yuan) OR (wang yuhan)) ((tan long) OR (tran luong)) run ;~.
• Adding a wildcard symbol may retrieve word variants: trang van velzen a ((ren yuan) or (wang yuhan)) ((tan long) or (tran luong)) run ;*.