Perhaps you should try some spelling variations:
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
dung cong » dung trong
thanh ban » thanh san, thanh van, thanh bac
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
than ban » toan ban, than man, nhuan ban
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - hanh ((trang va) or (luan van)) dung cong dan ((than ban) OR (thanh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - hanh ((trang va) OR (luan van)) dung cong dan ((than ban) OR (thanh ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - hanh ((trang va) or (luan van)) dung cong dan ((than ban) OR (thanh ban))".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - hanh ((trang va) or (luan van)) dung cong dan ((than ban) OR (thanh ban))*.