Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
su triet » su viet, su tien
ve triet » va trien
co sach » bo sach, cuon sach, hoc sach
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
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: co sach y ((hang va) or (nang cao)) hoi. hieu qua cac xuc va thanh vi ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y ((hang va) OR (nang cao)) hoi. hieu qua cac xuc va thanh vi ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: co sach y ((hang va) or (nang cao)) hoi. hieu qua cac xuc va thanh vi ((su triet) or (ve triet))*.