Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cong cong » trong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
san tran » tan tran, ban tran, dang tran
tran cau » tran chau, toan cau, ran cau

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 (doc hieu)) tach - hanh trinh cua ((cong cong) OR (cong dong)) san tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doc hieu)) tach - hanh trinh cua ((cong cong) OR (cong dong)) san tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doc hieu)) tach - hanh trinh cua ((cong cong) OR (cong dong)) san tran cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doc hieu)) tach - hanh trinh cua ((cong cong) OR (cong dong)) san tran cau*.