Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, nam duoc
va hanh » van hanh, va danh, ban hanh
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, v nang
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: te sach y nang cao hoi. hieu ve ((cam duc) OR (pham duc)) ((va hanh) OR (va thanh)) hai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. hieu ve ((cam duc) or (pham duc)) ((va hanh) OR (va thanh)) hai cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. hieu ve ((cam duc) or (pham duc)) ((va hanh) OR (va thanh)) hai cua te*.