Perhaps you should try some spelling variations:
tieng trung » truong trung
quang tieng » quang tien, vung tieng, quang trung
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
sinh quang » tinh quang, dinh quang, minh quang
trung ca » trung cap, truong ca, trung cua
ca chat » cao chat, cac chat, va chat
chat co » thuat co, chat cua, chat deo

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 tinh)) - nhan sinh quang tieng trung ca chat co~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - nhan sinh quang tieng trung ca chat co.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu tinh)) - nhan sinh quang tieng trung ca chat co*.