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