Perhaps you should try some spelling variations:
theo lieu » theo tieu, theo chieu, theo yeu
lieu tinh » trieu tinh, diep tinh, bien tinh
hanh dung » thanh dung, anh dung, hanh dong
luan hoan » luan van
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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: theo lieu tinh - hanh dung luan hoan ((cong dan) OR (cong tan)) ((toan cau) OR (toan tap))~.
• Adding a wildcard symbol may retrieve word variants: theo lieu tinh - hanh dung luan hoan ((cong dan) or (cong tan)) ((toan cau) or (toan tap))*.