Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
nam thuoc » nam thuc, nam thu, nha thuoc
su triet » su viet, su tien, ve triet
hanh hoi » hanh thoi, hanh noi, hanh hoa
cao duc » dao duc, cao suc, giao duc
va hanh » van hanh, va thanh, va danh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
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: te sach ky nang ma hoi. hieu ve ((nam thuoc) or (cao duc)) va hanh hoi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu ve ((nam thuoc) OR (cao duc)) va hanh hoi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ve ((nam thuoc) or (cao duc)) va hanh hoi ((cua triet) or (su triet))*.