Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
nang van » dang van, tang van, lang van
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
van hoi » van hoa, van hoc, van hoe
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 (hoc sach)) ky nang van hoi. hieu van cam xuc va hanh ((vi cua) OR (di cua)) triet~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (hoc sach)) ky nang van hoi. hieu van cam xuc va hanh ((vi cua) or (di cua)) triet*.