Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh hinh » hanh tinh, hanh dinh, hanh trinh
qua duong » quan duong, qua dung, qua dong
cong san » cong tac
toan ban » van ban
toan cao » 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: hoc thieu xanh - ((hanh hinh) OR (hanh chinh)) qua duong cong san ((toan ban) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh hinh) OR (hanh chinh)) qua duong cong san ((toan ban) OR (toan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh hinh) OR (hanh chinh)) qua duong cong san ((toan ban) or (toan cao))*".