Perhaps you should try some spelling variations:
trong quang » truong quang, thong quang, trong quan
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trong » hanh trang, anh trong, hinh trong
quang dung » quang trung, ung dung, cuong dung
dung dong » dung cong, vung dong, dung trong
dong san » cong san, dong bang, dong von
toan cao » toan ban, toan tap

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 sach)) - hanh trong quang dung dong san ((van ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh trong quang dung dong san ((van ban) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh trong quang dung dong san ((van ban) or (toan cao))*.