Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thieu xanh » chieu xanh, thien anh, thien danh
thanh toan » thanh hoa, thanh san, tinh toan
hieu manh » chieu xanh, hieu nganh, dieu hanh
cang hang » cang thang, hang hang, nang hang
toan cau » toan cao, toan ban, toan tap
ca dang » cua dang, cac dang, ca dan

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

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