Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, hanh trinh, minh trang
duong manh » duong van
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
toan cau » toan cao, toan ban, toan tai
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: doi chieu sach - ((hanh trang) or (canh tranh)) cua nhung duong manh ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh trang) OR (canh tranh)) cua nhung duong manh ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((hanh trang) or (canh tranh)) cua nhung duong manh ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((hanh trang) or (canh tranh)) cua nhung duong manh ((toan cau) OR (toan tap))*.