Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
chinh cong » thanh cong, trinh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
thuc dung » thuoc dung, tuc dung, thuat dung
thuy dung » thuy duong, thuoc dung, huy duong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh 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 (hieu manh)) - chinh cong ((thuc dung) or (thuy dung)) cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - chinh cong ((thuc dung) OR (thuy dung)) cong manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - chinh cong ((thuc dung) or (thuy dung)) cong manh toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - chinh cong ((thuc dung) or (thuy dung)) cong manh toan tap*.