Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
luan nhung » luan chung, luan hung, quan nhung
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh tang luan nhung ((cong tan) OR (cong tac)) ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tang luan nhung ((cong tan) OR (cong tac)) ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tang luan nhung ((cong tan) OR (cong tac)) ((toan cau) OR (toan ban))*.