Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
cong sang » cong san, cong lang, cong vang
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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