Perhaps you should try some spelling variations:
manh truong » manh trung, manh tuong, anh truong
theo chieu » theo tieu, theo chu, thi chieu
cong luan » tong luan, cong tuan, dong luan
luan phan » luan van, luan hoan
ho chieu » hoc thieu, mot chieu, doi chieu
va thong » va phuong, he thong, va cong
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (ho chieu)) sach - manh truong ((va thong) or (va thuong)) cong luan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - manh truong ((va thong) OR (va thuong)) cong luan phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - manh truong ((va thong) or (va thuong)) cong luan phan lap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - manh truong ((va thong) or (va thuong)) cong luan phan lap*.