Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu sang » chieu sach, chieu xanh, hieu lang
trinh khan » trinh han, trinh phan, trinh khai
doi chieu » doc hieu, doi chi, ho chieu
dang cong » dung cong
thong tu » phong tuc, thong tin, thong ke
khan cap » khan ap, than cap, khoan cam

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