Perhaps you should try some spelling variations:
nhung thuong » nhung phuong, nhung huong, nhung tuong
theo chieu » theo tieu, theo chu, thi chieu
hanh trinh » hanh chinh
thuong lan » thuong han, phuong lan, thuong mai
cua nhung » va nhung
ho chieu » hoc thieu, doi chieu, mot chieu
lan van » luan van, lang van, tan van

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