Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
cua viet » ca viet, hoa viet, cua vat
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach kem
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
qua cac » cua cac
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

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) OR (sach ty)) nang ma hoi. hieu qua cac 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) OR (sach ty)) nang ma hoi. hieu qua cac 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) OR (sach ty)) nang ma hoi. hieu qua cac xuc va hanh vi ((cua viet) or (va trien))".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sach ty)) nang ma hoi. hieu qua cac xuc va hanh vi ((cua viet) or (va trien))*.