Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
su sach » vu sach
may hoi » may thoi, tay hoi, mai hoi
ty mang » ty xang, ty hang, tin mang
so sach » so sanh, bo sach, co sach
qua cam » qua cham, qua cac, qua ca
tuc va » thuc va, truc va, tuc xa

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) or (so sach)) ty mang may hoi. hieu qua cam tuc va hanh vi ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty mang may hoi. hieu qua cam tuc va hanh vi ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty mang may hoi. hieu qua cam tuc va hanh vi ((cua triet) OR (su triet))*".