Perhaps you should try some spelling variations:
van nang » van quang, van dong, van dung
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
vi su » va su, ve su, ki su
tuan » quan, tran, luan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((van nang) or (van ban)) xa hoi. hieu ve cham xuc ((ban hanh) or (tuan anh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((van nang) OR (van ban)) xa hoi. hieu ve cham xuc ((ban hanh) OR (tuan anh)) vi su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((van nang) or (van ban)) xa hoi. hieu ve cham xuc ((ban hanh) or (tuan anh)) vi su triet*.