Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » hang va
tran van » luan van
cong ban » cong bang, cong san, cong tan
ban hang » ngan hang
hang cau » hang dau, hang ca, nhung cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh ((trang va) OR (tran van)) dung cong ban hang cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trang va) OR (tran van)) dung cong ban hang cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trang va) OR (tran van)) dung cong ban hang cau*.