Perhaps you should try some spelling variations:
thanh tung » thanh cong
thieu xanh » chieu xanh, hieu manh, thien danh
duong cong » dung cong, luong cong, duong trong
thanh toan » thanh hoa, thanh san
thien anh » thien danh, tien anh, thien thanh
dap duong » dai duong, dam duong, doan duong
tung dap » tung dan, trung dai, tuong dan

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 (thien anh)) - thanh tung dap duong cong ((thanh toan) OR (tinh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - thanh tung dap duong cong ((thanh toan) OR (tinh toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - thanh tung dap duong cong ((thanh toan) OR (tinh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - thanh tung dap duong cong ((thanh toan) OR (tinh toan)) tap*.