Perhaps you should try some spelling variations:
su sach » so sach, vu sach
co sach » bo sach, cuon sach, hoc sach
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
va hanh » van hanh, va thanh, va danh
vi cua » vai cua
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (co sach)) ky nang x hoi. hieu va pham duc va hanh ((vi cua) OR (di cua)) tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (co sach)) ky nang x hoi. hieu va pham duc va hanh ((vi cua) or (di cua)) tre*.