Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan trong » gian trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh trinh quan trong ((cong tan) OR (cong san)) ((toan cau) OR (toan tap))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh trinh quan trong ((cong tan) or (cong san)) ((toan cau) or (toan tap))*.