Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
luan trong » quan trong, luat trong, luan tuong
hoc chieu » hoc thieu, ho chieu, hoc hien
anh sang » lanh sang, anh dang, anh nang
anh bang » anh hoang, anh quang, tinh bang
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cau » nhanh cau, phan cau, nhan sau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - ((anh sang) or (anh bang)) luan trong cong tac nhan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((anh sang) OR (anh bang)) luan trong cong tac nhan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - ((anh sang) or (anh bang)) luan trong cong tac nhan cau*.