Perhaps you should try some spelling variations:
quang trong » quang truong, quang trung, quan trong
chieu xanh » chieu sach, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trung » thanh trung, hanh trang, manh trung
trong dang » truong dang, trong dan, trong dong
tam quang » lam quang, tac quang, tai quang
dang toan » dang tran, dan toan, dung toan
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 sang))) or (chieu tinh)) - hanh trung tam quang trong dang toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu xanh) OR (chieu sang))) OR (chieu tinh)) - hanh trung tam quang trong dang toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu xanh) or (chieu sang))) or (chieu tinh)) - hanh trung tam quang trong dang toan cao*.