Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang ha » long ha
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
co viet » so viet, o viet, hoc viet
ha hoi » hoa hoi, ha noi, xa hoi
xuc va » duc va, tuc va, luc va

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: su sach ty lang ha hoi. hieu qua cac xuc va hanh vi ((cua viet) OR (co viet))~.
• Adding a wildcard symbol may retrieve word variants: su sach ty lang ha hoi. hieu qua cac xuc va hanh vi ((cua viet) or (co viet))*.