Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
thu sach » tu sach, thuat sach, thuoc sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
chuc va » thuc va, thuc vat
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
co hoi » co loi
di cua » dai cua, doi cua, de cua
cua te » cua tu

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: thu sach y nang ((co hoi) OR (co hoc)). hieu ve pham chuc va hanh di cua te~.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((co hoi) or (co hoc)). hieu ve pham chuc va hanh di cua te*.