Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh qua » tranh cua, thanh qua, trinh qua
ho chieu » theo chieu, hoc thieu, doi chieu
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong ty
toan ban » van ban

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 xanh - canh tranh qua dung ((cong tan) or (cong thanh)) ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh tranh qua dung ((cong tan) OR (cong thanh)) ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh tranh qua dung ((cong tan) or (cong thanh)) ((toan tap) or (toan ban))*.