Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
pham thuc » phap thuc, pham chuc, pham thu
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
nang ma » tang ma, sang ma, nang cao
hieu vi » hieu voi, hieu va, hieu ve
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
y nang » ky nang, ly nang, v nang
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: doc sach y nang ma hoi. hieu vi ((pham thuc) or (nham thuc)) va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang ma hoi. hieu vi ((pham thuc) OR (nham thuc)) va hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: doc sach y nang ma hoi. hieu vi ((pham thuc) or (nham thuc)) va hanh lai cua triet*.