Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
van nang » van quang, van ban, van dong
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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: ((su sach) OR (vu khach)) van nang xa hoi. hieu ve cam luc van hanh vi su triet~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) van nang xa hoi. hieu ve cam luc van hanh vi su triet*.