Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
cong thanh » dong thanh, cong trinh, cong tan
hieu xanh » chieu xanh, hieu manh, hieu nganh
quan dung » quan duong, qua dung, quan dong
doc hieu » toc thieu, hoc thieu, hoc hien
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

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