Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trong » hanh trang, anh trong, hinh trong
dung cong » dung trong
trong ca » trong cac, trong nha
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cau » toan cau, doan dau, doan cap
ca dung » cao dung, cap dung, cu dung

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 xanh) OR (chieu sang)) - hanh trong ca dung cong tac doan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - hanh trong ca dung cong tac doan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - hanh trong ca dung cong tac doan cau*.