Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
tuong cua » truong cua, huong cua, thong cua
dang cong » dung cong
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: doi chieu sang - thanh tuong cua ((thong cong) or (dang cong)) dan ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tuong cua ((thong cong) OR (dang cong)) dan ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tuong cua ((thong cong) or (dang cong)) dan ((toan cao) or (van ban))*.