Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
hieu ve » hieu va, hieu van
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ve pham » vi pham, v pham, ve phan
te sach » toc sach
su sach » so sach, vu sach
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((te sach) or (thu sach))) or (su sach)) ky nang o hoi. hieu ve pham thuc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((te sach) OR (thu sach))) OR (su sach)) ky nang o hoi. hieu ve pham thuc va hanh lai cua te.
• Adding a wildcard symbol may retrieve word variants: ((((te sach) or (thu sach))) or (su sach)) ky nang o hoi. hieu ve pham thuc va hanh lai cua te*.