Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
cua trong » cua truong, cua trung, qua trong
anh dung » anh dong, anh huong, sach dung
dung cua » dung luan, dung cho
cong dan » cong san, cong tan, cong dong
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: theo ((chieu xanh) or (hieu quang)) - anh dung cua trong ((cong dan) OR (huong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (hieu quang)) - anh dung cua trong ((cong dan) OR (huong dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (hieu quang)) - anh dung cua trong ((cong dan) OR (huong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (hieu quang)) - anh dung cua trong ((cong dan) OR (huong dan)) toan tap*.