Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
khanh luan » khanh thuan, doanh luan, hang luan
thang nong » thang long, hang nong, thang trong
tang nong » hang nong, tang dong, tang mong
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » hoc thieu, doi chieu, mot chieu
toan tap » toan ban

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 - khanh luan van ((thang nong) OR (tang nong)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - khanh luan van ((thang nong) OR (tang nong)) manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sach - khanh luan van ((thang nong) OR (tang nong)) manh toan tap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - khanh luan van ((thang nong) OR (tang nong)) manh toan tap*.