Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
dinh chi » dinh thi, dinh tri, dinh moi
lang van » dang van, tang van, hoang van
van hau » van ha, van hai, van dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh dinh chi ((hang cong) or (dung cong)) lang van hau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh dinh chi ((hang cong) OR (dung cong)) lang van hau*.