Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
danh thanh » dinh thanh, dang thanh, nhanh thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
danh tuan » anh tuan, manh tuan, danh thang
chinh va » chinh ta, chinh tai, hanh va
va thong » va thuong, va phuong, he thong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu manh) or (hieu lang)) - hanh chinh va thong cong ((danh tuan) OR (danh thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (hieu lang)) - hanh chinh va thong cong ((danh tuan) OR (danh thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (hieu lang)) - hanh chinh va thong cong ((danh tuan) OR (danh thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (hieu lang)) - hanh chinh va thong cong ((danh tuan) OR (danh thanh)) cau*.