Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
chieu sang » chieu sach, chieu xanh, hieu lang
trinh than » trinh thanh, trinh han, trinh toan
doi chieu » doc hieu, doi chi, ho chieu
thuong tu » thong tu, tuong tu, huong tu
dang cong » dung cong
than cap » khan cap, thanh lap, thanh cac

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 thuong tu ((thanh cong) or (dang cong)) trinh than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh thuong tu ((thanh cong) OR (dang cong)) trinh than cap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh thuong tu ((thanh cong) or (dang cong)) trinh than cap*.