Perhaps you should try some spelling variations:
thanh duong » thanh huong, thanh cuong, thanh chuong
thanh vuong » thanh huong, thanh cuong, thanh chuong
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
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: hoc chieu xanh - ((thanh vuong) OR (thanh duong)) tat ((thong cong) or (dung cong)) tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - ((thanh vuong) OR (thanh duong)) tat ((thong cong) OR (dung cong)) tinh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - ((thanh vuong) OR (thanh duong)) tat ((thong cong) or (dung cong)) tinh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - ((thanh vuong) OR (thanh duong)) tat ((thong cong) or (dung cong)) tinh toan ban*.