Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
xuc van » duc van, luc van, vuc van
van han » van hanh, van phan, van nhan
thai va » thai van
ma hoi » mai hoi, xa hoi, ma hoa
tai va » mai va, tri va, dai va
thiet » thieu

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 ky nang ma hoi. hieu qua cham xuc van han ((tai va) or (thai va)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ma hoi. hieu qua cham xuc van han ((tai va) OR (thai va)) thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ma hoi. hieu qua cham xuc van han ((tai va) or (thai va)) thiet*.