Perhaps you should try some spelling variations:
trong quang » truong quang, thong quang, trong quan
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
lang trong » dung trong, cong trong, dong trong
quang dung » quang trung, ung dung, cuong dung
dung dung » ung dung, dung ung, dung dong
dung van » duong van, dung va, dang van
ban cau » bang cau, ban can, van cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chieu tinh)) - lang trong quang dung dung van ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu tinh)) - lang trong quang dung dung van ban cau*.