Perhaps you should try some spelling variations:
tdanh trung » thanh trung, thanh tung, dang trung
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
danh trung » dang trung, dinh trung, manh trung
thong cong » trong cong, tong cong, thong thong
va thong » va thuong, va phuong, he thong
cong san » cong tac
san than » sang than, san thanh, ban than
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) OR (chieu sach)) - ((danh trung) or (tdanh trung)) va thong cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - ((danh trung) OR (tdanh trung)) va thong cong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - ((danh trung) or (tdanh trung)) va thong cong san than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - ((danh trung) or (tdanh trung)) va thong cong san than cap*.