Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
cac thuc » cach thuc, cac thu, can thuc
thai cua » than cua, tai cuc, tri cua
te sach » toc sach
va hanh » van hanh, va thanh, va danh
tai cua » tai cuc, tri cua, dai cua
x hoi » xa hoi, o hoi, x ho

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 thi nang x hoi. lieu va cac thuc ((va hanh) or (ban thanh)) ((tai cua) or (thai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi nang x hoi. lieu va cac thuc ((va hanh) OR (ban thanh)) ((tai cua) OR (thai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: te sach thi nang x hoi. lieu va cac thuc ((va hanh) or (ban thanh)) ((tai cua) or (thai cua)) triet*.