Perhaps you should try some spelling variations:
hanh trinh » canh tranh
duong dung » cuong dung, dung dung, duong dang
tieu xanh » tieu danh, chieu xanh, dieu hanh
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
toan cao » toan tap
toan ban » van ban

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 trinh) OR (hanh chinh)) duong dung cong manh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh trinh) OR (hanh chinh)) duong dung cong manh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((hanh trinh) OR (hanh chinh)) duong dung cong manh ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh trinh) OR (hanh chinh)) duong dung cong manh ((toan cao) or (toan ban))*.