Perhaps you should try some spelling variations:
khong cong » thong cong, chong cong, khong con
chieu xanh » chieu sach, chieu sang, chieu tinh
khong cang » thong cong, hong bang, khong dung
ho chieu » theo chieu, hoc thieu, doi chieu
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
nang tu » nang du, nang luc

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 - ganh ((nang suat) OR (nang tu)) ((khong cong) OR (khong cang)) van toan cau~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ganh ((nang suat) or (nang tu)) ((khong cong) or (khong cang)) van toan cau*.