Perhaps you should try some spelling variations:
thieu dien » thieu nien, thieu bien, tieu dien
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cac xuc » cac nuoc, chat xuc, cac cuoc
va dung » van dung, va duong, vat dung
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ma hoi. thieu dien ((cac xuc) or (cam xuc)) va dung tai ((su triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. thieu dien ((cac xuc) OR (cam xuc)) va dung tai ((su triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. thieu dien ((cac xuc) or (cam xuc)) va dung tai ((su triet) or (va thiet))*.