Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tran » hanh trang, thanh tran, hanh tram
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
than cap » khan cap, thanh lap, than cua

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 tran van ((hang cong) or (bang cong)) dan ((than cap) OR (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tran van ((hang cong) OR (bang cong)) dan ((than cap) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh tran van ((hang cong) or (bang cong)) dan ((than cap) OR (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tran van ((hang cong) or (bang cong)) dan ((than cap) OR (thanh cac))*.