Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, thong thong, phong chong
cong thanh » dong thanh, cong trinh, cong tan
hien hanh » dieu hanh
chinh cua » chinh ca, chinh sua, hinh cua
tong cong » trong cong, cong cong, dung cong
thanh cau » thanh chau, thanh mau, nhanh cau

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

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