Perhaps you should try some spelling variations:
hanh huong » thanh huong, manh huong, canh huong
luan trong » luat trong, luan tuong, luong trong
quan trong » gian trong
tieu xanh » tieu danh, chieu xanh, dieu hanh
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: theo tieu xanh - ((hanh huong) or (anh huong)) ((luan trong) OR (quan trong)) cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh huong) OR (anh huong)) ((luan trong) OR (quan trong)) cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh huong) or (anh huong)) ((luan trong) OR (quan trong)) cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh huong) or (anh huong)) ((luan trong) OR (quan trong)) cong dan toan cao*.