Perhaps you should try some spelling variations:
theo dieu » theo tieu, theo chieu, thuoc dieu
hanh tang » hanh trang, anh tang, hanh mang
chua nang » chuc nang, kha nang, cuu nang
chua xang » chuc nang, chu bang, chua dong
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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 dieu hanh - hanh tang ((chua nang) OR (chua xang)) cong dan ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo dieu hanh - hanh tang ((chua nang) OR (chua xang)) cong dan ((toan cau) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: theo dieu hanh - hanh tang ((chua nang) OR (chua xang)) cong dan ((toan cau) or (toan cao))*.