Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
quang tuan » quang thanh, quan luan, quang cua
hieu lang » chieu sang, hieu quang, nhieu tang
tung tuan » trung tuan, hung tuan, trang tuan
dong von » dung von, dong co, dong hoc
von toan » van toan, mon toan, von doanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (hieu lang)) - thanh ((tung tuan) OR (quang tuan)) cong dong von toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu lang)) - thanh ((tung tuan) OR (quang tuan)) cong dong von toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu lang)) - thanh ((tung tuan) OR (quang tuan)) cong dong von toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu lang)) - thanh ((tung tuan) OR (quang tuan)) cong dong von toan tap*.