Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh dung » thanh dung, hanh dong, manh dung
dang cong » dung cong
tan thanh » tran thanh, tang thanh, toan thanh
thanh lap » thanh san, phan lap, thanh hai
anh dung » anh dong, anh huong, sach dung
cong tan » cong tac, cong san, cong thanh

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