Perhaps you should try some spelling variations:
hieu tieng » viet tieng, dien tieng, tiep tieng
hieu viec » nhieu viec, hieu ve, sieu viet
chat xuc » chat huu, cam xuc, chao xu
ban hanh » ban hang
cua viet » ca viet, hoa viet, cua dieu
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
xuc ban » duc ban, cuc ban, quoc ban
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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: tu sach ky nang ma hoi. ((hieu tieng) OR (hieu viec)) chat xuc ban hanh vi cua viet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. ((hieu tieng) or (hieu viec)) chat xuc ban hanh vi cua viet*.