Perhaps you should try some spelling variations:
trong quang » truong quang, thong quang, trong quan
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung thanh, trung tam, tran tuan
quang toan » quang tuan, quang tran, quang doan
ho chieu » theo chieu, hoc thieu, doi chieu
hang cua » mang cua, hang ca, huong cua
toan cau » 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: ho chieu sang - hanh ((trung tuan) or (hang cua)) dung trong quang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh ((trung tuan) OR (hang cua)) dung trong quang toan cau*.