Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa
cac lo » cac lop, cac co, cac bo
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky nang ma hoi. ((hieu va) or (hieu qua)) cac lo va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky nang ma hoi. ((hieu va) OR (hieu qua)) cac lo va hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang ma hoi. ((hieu va) or (hieu qua)) cac lo va hanh vai cua triet*.