Perhaps you should try some spelling variations:
thong quang » thong quan, thong qua, luong quang
chieu sang » chieu sach, chieu xanh, hieu lang
trong quan » thong quan, tong quan, luong quan
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
cong ban » cong bang, cong san, cong tan
ban hanh » ban hang
hanh cac » hang cac, hanh cat, nhanh cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh ((trong quan) OR (thong quang)) nhung cong ban hanh cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh ((trong quan) OR (thong quang)) nhung cong ban hanh cac".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((trong quan) OR (thong quang)) nhung cong ban hanh cac*.