Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
so sach » so sanh, bo sach, co sach
nang ma » tang ma, sang ma, nang cao
vien da » vien dai, hien dai
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
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: so sach y nang ma hoi. hieu ((ve cac) or (vien da)) tac ((va hanh) or (ban thanh)) lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang ma hoi. hieu ((ve cac) OR (vien da)) tac ((va hanh) OR (ban thanh)) lai cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach y nang ma hoi. hieu ((ve cac) or (vien da)) tac ((va hanh) or (ban thanh)) lai cua triet*.