Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
toc sach » hoc sach, doc sach, thuoc sach
cao truc » cau truc, vao truc, cao thuoc
hieu va » lieu va, hieu qua
sach tu » sach thu, cach tu, sach ty
va hanh » van hanh, va danh, ban hanh
tu nang » tru nang, tu nong, tu nano
lai cua » dai cua, hai cua, lai chau
va cao » va cac, va co, va dao
nang o » nang co, nang ho, nang ro
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: toc sach tu nang o hoi. hieu va cao truc ((va hanh) or (va thanh)) lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tu nang o hoi. hieu va cao truc ((va hanh) OR (va thanh)) lai cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach tu nang o hoi. hieu va cao truc ((va hanh) or (va thanh)) lai cua triet*.