Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ho chiet » ho chieu, ho thiet, hoc thiet
cong bai » cuong bai, cung bai, cong bao
cong hai » cong thai, cong ha, hoang hai
toan cau » toan cao, toan ban, toan tap
cong ba » cong bao, cong ha, cong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh tranh cua nhung ((((cong bai) OR (cong ba))) or (cong hai)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh tranh cua nhung ((((cong bai) OR (cong ba))) OR (cong hai)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh tranh cua nhung ((((cong bai) OR (cong ba))) or (cong hai)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh tranh cua nhung ((((cong bai) OR (cong ba))) or (cong hai)) toan cau*.