Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
thanh vi » thanh va, thanh ve, nhanh vi
cham tu » pham tu, cam tu, chai tu
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
tu gia » tu giao, tu giac, tu giay

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 y nang ma hoi. hieu ve cham tu gia ((thanh vi) or (hanh vi)) ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. hieu ve cham tu gia ((thanh vi) OR (hanh vi)) ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu ve cham tu gia ((thanh vi) or (hanh vi)) ((cua triet) or (va triet))*.