Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
cao ung » cao dung, cho ung, bao ung
cac ung » cac chung, cac cong, cac dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh thuong ((cao ung) OR (cac ung)) cong tan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh thuong ((cao ung) OR (cac ung)) cong tan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh thuong ((cao ung) OR (cac ung)) cong tan ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh thuong ((cao ung) OR (cac ung)) cong tan ((toan cau) or (toan ban))*.