Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
cac truc » cau truc, cac tru, cac trung
hanh vai » hanh vi, hanh va, hanh tai
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
su sach » vu sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac

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)) y nang ma hoi. hieu ve cac truc va hanh vai ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y nang ma hoi. hieu ve cac truc va hanh vai ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y nang ma hoi. hieu ve cac truc va hanh vai ((cua triet) or (su triet))*".