Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
va triet » va trien, ve triet, cua triet
hanh vai » hanh vi, hanh va, hanh tai
sach ly » sach y, sach lo, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, xa hoi, ma hoa
nam tu » nam thu, nam thuc
thiet » thieu

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 ly nang ma hoi. hieu ve ((nam tu) or (nam thuoc)) va hanh vai ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang ma hoi. hieu ve ((nam tu) OR (nam thuoc)) va hanh vai ((va triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: su sach ly nang ma hoi. hieu ve ((nam tu) or (nam thuoc)) va hanh vai ((va triet) or (va thiet))*.