Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trong » hanh trang, anh trong, hinh trong
hoc chieu » hoc thieu, ho chieu, hoc hien
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cau » toan cau, doan dau, doan cap
cao ung » cao dung, cac ung, cho ung

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 - hanh trong ((cao ung) or (cao dang)) cong tac doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh trong ((cao ung) OR (cao dang)) cong tac doan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - hanh trong ((cao ung) or (cao dang)) cong tac doan cau*.