Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
van hoi » van hoa, van hoc, van loi
van hoe » van hoa, van hoc, van hieu
nam xua » nam cua, nam mua, nam qua
va hanh » van hanh, va thanh, va danh
xua va » xuat va, vua va, sua 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 nang ((van hoi) or (van hoe)). hieu van nam xua va hanh vi ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang ((van hoi) OR (van hoe)). hieu van nam xua va hanh vi ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang ((van hoi) or (van hoe)). hieu van nam xua va hanh vi ((cua triet) OR (su triet))*".