Perhaps you should try some spelling variations:
dong thanh » truong thanh
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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