Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
dung cong » dung trong
hanh ban » thanh ban, hang ban, hanh han
hanh san » thanh san, khach san, thanh son
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran van » luan van

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 ban) OR (hanh san)) cua dung cong tac tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - ((hanh ban) OR (hanh san)) cua dung cong tac tran van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sang)) - ((hanh ban) OR (hanh san)) cua dung cong tac tran van".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - ((hanh ban) OR (hanh san)) cua dung cong tac tran van*.