Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, co sach
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
qua hai » qua hoat
hai cuc » tai cuc, hai cua, thai cua
va hanh » van hanh, va thanh, va danh
cuc va » chuc va, duc va, cuu va
vi cua » vai cua, di 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: ((cuon sach) OR (hoc sach)) ky dang xa hoi. hieu qua hai cuc va hanh vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: ((cuon sach) or (hoc sach)) ky dang xa hoi. hieu qua hai cuc va hanh vi cua triet*.