Perhaps you should try some spelling variations:
thong quang » thong quan, thong qua, luong quang
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
hanh thong » anh thong, hanh trong, hang thong
quang dung » quang trung, ung dung, cuong dung
trong dan » trong dang, trong san, trong tan
toan cau » toan ban, toan tap, toan tai
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 (chiet tach)) - hanh thong quang dung trong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chiet tach)) - hanh thong quang dung trong dan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chiet tach)) - hanh thong quang dung trong dan ((toan cau) or (toan cao))*.