Perhaps you should try some spelling variations:
thanh hoa » thanh pho
cach hoc » cach thuc, cach thoi, dich hoc
cong hoa » dong hoa, dong hoc, hang hoa
cong coc » cong cuoc, cong cac, cong co
gian dan » gian lang
tu cach » tu cac
va gian » va gianh, van gian, va giai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach hoc tap, nghien cuu ((cong hoa) or (cong coc)) thanh hoa hoc xa hoi va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien cuu ((cong hoa) OR (cong coc)) thanh hoa hoc xa hoi va gian dan.
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien cuu ((cong hoa) or (cong coc)) thanh hoa hoc xa hoi va gian dan*.