Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
hanh phan » thanh phan, anh phan, hanh han
phan cua » nhan cua, than cua, phat cua
cong tan » cong tac, cong san, cong ty
toan cau » toan cao, toan tap, toan tai
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: doi chieu xanh - hanh phan cua cong ((cong tan) or (cong thanh)) ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - hanh phan cua cong ((cong tan) OR (cong thanh)) ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh phan cua cong ((cong tan) or (cong thanh)) ((toan cau) or (toan ban))*.