Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
canh manh » lanh manh, canh tranh, cach mang
manh chua » manh cua, tranh chua, benh chua
chua nang » chuc nang, chua xang, kha nang
nang cong » nang song, dang cong, bang cong
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chiet tach - canh manh chua nang cong dan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - canh manh chua nang cong dan ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - canh manh chua nang cong dan ((phan cau) or (phan tu))*.