Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
va trong » va truong, va tuong, va trung
va thong » va thuong, va phuong, he thong
cong san » cong tac

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 trung ((va trong) or (va thong)) cong san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung ((va trong) OR (va thong)) cong san thanh cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung ((va trong) or (va thong)) cong san thanh cau*.