Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
tang hoi » tang ho, tang loi, tan hoi
cau theo » cau thi, cau tao
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
hoi hoi » hoi hoc, hoc hoi, hoi doi
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
hai cau » hai chau, hai chu, hai hau

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky tang hoi hoi. hieu va cac xuc ((va hanh) or (ban thanh)) hai cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky tang hoi hoi. hieu va cac xuc ((va hanh) OR (ban thanh)) hai cau theo.
• Adding a wildcard symbol may retrieve word variants: su sach ky tang hoi hoi. hieu va cac xuc ((va hanh) or (ban thanh)) hai cau theo*.