Perhaps you should try some spelling variations:
cua triet » su triet, va triet
ban thanh » ban hanh, ban hang
cua viet » ca viet, hoa viet, cua vat
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
thu ban » thu hang
su sach » so sach, vu sach
cam thu » nam thu, cac thu, ca thu
van cam » van nam, van lam, van cau
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, me hoi

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 y nang ((ma hoi) OR (ma hoa)). hieu van cam thu ban thanh vi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoi) OR (ma hoa)). hieu van cam thu ban thanh vi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((ma hoi) OR (ma hoa)). hieu van cam thu ban thanh vi ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) OR (ma hoa)). hieu van cam thu ban thanh vi ((cua triet) or (cua viet))*.