Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu sang » chieu sach, chieu xanh, hieu lang
ho chieu » theo chieu, hoc thieu, doi chieu
va trong » va truong, va thong, va trung
va tuong » va thuong, va thong, xa truong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
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: ho chieu sang - thanh tuong ((va trong) or (va tuong)) cong ban than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh tuong ((va trong) OR (va tuong)) cong ban than cap*.