Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
chuong cua » chuong chua, huong cua, chung cua
thong cong » trong cong, thong thong, phong chong
tong cong » trong cong, cong cong, dung cong
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: hoc ((thieu xanh) or (chieu xanh)) - thanh chuong cua ((thong cong) OR (tong cong)) tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - thanh chuong cua ((thong cong) OR (tong cong)) tinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - thanh chuong cua ((thong cong) OR (tong cong)) tinh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - thanh chuong cua ((thong cong) OR (tong cong)) tinh toan tap*.