Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, cua khach
van hanh » van thanh, ban hanh, van anh
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
ban xa » ban va, ban ma, ban da
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) OR (vay khach)))) van ban xa hoi. hieu ve cam luc van hanh vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (((vu khach) OR (vay khach)))) van ban xa hoi. hieu ve cam luc van hanh vi su triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (((vu khach) OR (vay khach)))) van ban xa hoi. hieu ve cam luc van hanh vi su triet*.