Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nguoi dao » nguoi tay
tien anh » tieng anh, tien manh, dien anh
cua tang » cua hang, ca tang, cua lang
cua dang » cua cong, cua ban
dao toan » bao toan, dan toan, dao hoan
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 (tien anh)) - canh tranh ((cua tang) OR (cua dang)) nguoi dao toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (tien anh)) - canh tranh ((cua tang) OR (cua dang)) nguoi dao toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (tien anh)) - canh tranh ((cua tang) OR (cua dang)) nguoi dao toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (tien anh)) - canh tranh ((cua tang) OR (cua dang)) nguoi dao toan tap*.