Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
luan hoang » luan hoan, quan hoang, tuan hoang
vuong tac » tuong tac, vuong tat, huong tac
quang cao » nang cao, quang nam
quan cau » toan cau, quan ha, quan cua

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 doanh luan hoang vuong tac ((quan cau) or (quang cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - hanh doanh luan hoang vuong tac ((quan cau) OR (quang cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - hanh doanh luan hoang vuong tac ((quan cau) or (quang cao))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - hanh doanh luan hoang vuong tac ((quan cau) or (quang cao))*.