Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
van nham » van nam, van nhan, van tham
vat hanh » vat thanh, van hanh, va hanh
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (hoc sach)) ky nang ma hoi. hieu van nham thuc vat hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (hoc sach)) ky nang ma hoi. hieu van nham thuc vat hanh vi cua triet*.