Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
bang cong » dang cong, bang song, hang cong
tang cua » mang cua, hang cua, thong cua
ban dung » van dung, dan dung, lan dung

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 - hanh ((tang cua) OR (tang luan)) ((nhung cong) or (bang cong)) ban dung luan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((tang cua) OR (tang luan)) ((nhung cong) OR (bang cong)) ban dung luan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((tang cua) OR (tang luan)) ((nhung cong) or (bang cong)) ban dung luan".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((tang cua) OR (tang luan)) ((nhung cong) or (bang cong)) ban dung luan*.