Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
cong sang » cong san, cong lang, cong vang
sang than » cang thang, dang thanh, sang tao
ho chieu » hoc thieu, doi chieu, mot chieu
tran van » luan van
than cau » toan cau, phan cau, than cap

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