Perhaps you should try some spelling variations:
nhung thuong » nhung phuong, nhung huong, nhung tuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » hanh chinh
cua nhung » va nhung
lan van » luan van, lang van, san van
tan van » tran van, tang van, luan van

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 sach - ((canh tranh) or (hanh trinh)) cua nhung thuong ((lan van) OR (tan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((canh tranh) OR (hanh trinh)) cua nhung thuong ((lan van) OR (tan van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((canh tranh) or (hanh trinh)) cua nhung thuong ((lan van) OR (tan van)) ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((canh tranh) or (hanh trinh)) cua nhung thuong ((lan van) OR (tan van)) ban*.