Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
hieu xanh » chieu xanh, hieu manh, hieu nganh
quan dong » quang dong, quan long, quan hoang
doc hieu » toc thieu, hoc thieu, hoc hien
toan cau » 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 dong) or (quang dung)) cong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh chinh ((quan dong) OR (quang dung)) cong thanh toan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh chinh ((quan dong) or (quang dung)) cong thanh toan cau*.