Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
hieu van » hieu va, thien van, lieu va
cua hang » cua dang, cua nhung, cua cong
cong san » cong tac
tan ban » toan ban, tang ban, can ban

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

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