Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
chinh tai » chinh tri
hang cong » dang cong, hang nong, bang cong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban
hanh va » hang va, hanh vi

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 - hanh ((hanh va) or (chinh tai)) hang cong tan ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - hanh ((hanh va) OR (chinh tai)) hang cong tan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chiet tach - hanh ((hanh va) or (chinh tai)) hang cong tan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - hanh ((hanh va) or (chinh tai)) hang cong tan ((toan cao) OR (toan ban))*.