Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
anh son » anh dong, tinh son

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu tinh - ((hanh dung) or (anh son)) cua dung cong tan ((toan ban) OR (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - ((hanh dung) OR (anh son)) cua dung cong tan ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tinh - ((hanh dung) or (anh son)) cua dung cong tan ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - ((hanh dung) or (anh son)) cua dung cong tan ((toan ban) OR (van ban))*.