Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chinh suat » chinh sua, chinh luan, chinh su
hien xanh » hien hanh, hien nhanh, chieu xanh
suat dung » thuat dung, xuat duong, suat huong
dung cong » dung trong
trai chau » tran chau, trai chan, lai chau
cong tam » cong tac, cong tan, cong nam
tam trai » tam tri, tac trai, kham trai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (chieu sang)) - hanh chinh suat dung cong tam trai chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu sang)) - hanh chinh suat dung cong tam trai chau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu sang)) - hanh chinh suat dung cong tam trai chau*.