Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man
mang va » mang vua, dang va, mang xa
bang va » ban va, trang va, dang van

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 ((((mang va) or (bang va))) or (hang va)) hang cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((((mang va) OR (bang va))) OR (hang va)) hang cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((((mang va) or (bang va))) or (hang va)) hang cong dan than ban*.