Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
cua viet » ca viet, hoa viet, cua vat
chat xuc » chat huu, cam xuc, chao xu
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, cac cuoc
nang ma » tang ma, sang ma, nang cao
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: su sach ky nang ma hoi. hieu qua ((cac xuc) OR (chat xuc)) va hanh vi ((cua viet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ma hoi. hieu qua ((cac xuc) OR (chat xuc)) va hanh vi ((cua viet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ma hoi. hieu qua ((cac xuc) OR (chat xuc)) va hanh vi ((cua viet) or (va trien))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang ma hoi. hieu qua ((cac xuc) OR (chat xuc)) va hanh vi ((cua viet) or (va trien))*.