Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
thuoc dung » hoc dung, thuy dung
anh trong » anh thuong, dinh trong, lang trong
thuc dung » thuy dung, tuc dung, thuat dung
cong san » cong tac
san toan » van toan, dan toan, 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: hoc ((thieu xanh) or (chieu xanh)) - anh trong ((thuc dung) OR (thuoc dung)) cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - anh trong ((thuc dung) OR (thuoc dung)) cong san toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - anh trong ((thuc dung) OR (thuoc dung)) cong san toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - anh trong ((thuc dung) OR (thuoc dung)) cong san toan tap*.