Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cang thang » dang thanh
cong thanh » dong thanh, cong trinh, cong tan
hien hanh » dieu hanh
tong cong » trong cong, cong cong, dung cong
chinh ca » chinh ta, chinh va, chinh tai
ca tong » ca trong, cap tong, cua tong

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