Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
chieu sang » chieu sach, chieu xanh, hieu lang
thong dung » thong cong, thong thuong
doi chieu » doc hieu, doi chi, ho chieu
quan dung » quang dung, quan duong, qua dung
san cao » san cho, san bao, nang cao
san co » ban co, sang cho

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 trung ((quan dung) or (thong dung)) trung thanh ((san cao) or (san co))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung ((quan dung) OR (thong dung)) trung thanh ((san cao) OR (san co)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung ((quan dung) or (thong dung)) trung thanh ((san cao) or (san co))*.