Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cong cong » cong dong, trong cong, dung cong
tran chau » tranh chap, tran huu
cong tan » cong tac, cong san, cong thanh
tran cau » toan cau, ran cau, tra cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu xanh) OR (chieu sach)) - hanh trinh cua cong cong tan ((tran cau) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu xanh) OR (chieu sach)) - hanh trinh cua cong cong tan ((tran cau) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((chieu xanh) OR (chieu sach)) - hanh trinh cua cong cong tan ((tran cau) or (tran chau))".
• Adding a wildcard symbol may retrieve word variants: toc ((chieu xanh) OR (chieu sach)) - hanh trinh cua cong cong tan ((tran cau) or (tran chau))*.