Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nang quan » ban quan, nang suat
dung cong » dung trong
mang qua » mang cua, mang vua, tang quan
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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 sach) or (trieu tinh)) - hanh ((mang qua) OR (nang quan)) dung cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (trieu tinh)) - hanh ((mang qua) OR (nang quan)) dung cong tac than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (trieu tinh)) - hanh ((mang qua) OR (nang quan)) dung cong tac than cap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (trieu tinh)) - hanh ((mang qua) OR (nang quan)) dung cong tac than cap*.