Perhaps you should try some spelling variations:
nhung thuong » nhung phuong, nhung huong, nhung tuong
chieu sach » chinh sach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
thuong lan » thuong han, phuong lan, thuong mai
cua nhung » va nhung
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: doi ((chieu sach) OR (chiet tach)) - ((hanh tranh) or (hanh trinh)) cua nhung thuong lan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chiet tach)) - ((hanh tranh) OR (hanh trinh)) cua nhung thuong lan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - ((hanh tranh) or (hanh trinh)) cua nhung thuong lan van ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chiet tach)) - ((hanh tranh) or (hanh trinh)) cua nhung thuong lan van ban*.