Perhaps you should try some spelling variations:
thong quang » thong quan, thong qua, luong quang
duong trong » dung trong
chieu sang » chieu sach, chieu xanh, hieu lang
trung quan » truong quan, trong quan, trung tuan
trong bac » trong cac, trong ban, trong ba
bac thanh » ban thanh, cac thanh, tai thanh
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, doi chieu

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 - thanh ((trung quan) or (thong quang)) duong trong bac thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh ((trung quan) OR (thong quang)) duong trong bac thanh cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh ((trung quan) or (thong quang)) duong trong bac thanh cau*.