Perhaps you should try some spelling variations:
cho thanh » cho phan, tro thanh, cuu thanh
dong cong » duong cong, dung cong, dang cong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: cao ((cho sinh) or (cho thanh)) - anh tang cua dong cong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao ((cho sinh) OR (cho thanh)) - anh tang cua dong cong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: cao ((cho sinh) or (cho thanh)) - anh tang cua dong cong dan ((toan cau) or (toan ban))*.