Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh sai » dung sai, danh bat, danh dau
sai cua » dai cua, hai cua, lai cua
ha danh » han danh, hoa danh, ha anh
hieu le » hieu ve, hieu ly, tieu le
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
lai hoi » dai hoi, lai hoa, lai roi
hieu he » hieu ve, hiem he, hieu hien
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ((ma hoi) or (lai hoi)). ((hieu he) or (hieu le)) nam thu ha danh sai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((ma hoi) OR (lai hoi)). ((hieu he) OR (hieu le)) nam thu ha danh sai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((ma hoi) or (lai hoi)). ((hieu he) or (hieu le)) nam thu ha danh sai cua triet*.