Trying to convert pdf documents in Spanish to word documents but the converted file prints gibberish

I have been trying to convert PDF documents in Spanish to Word documents but when I down load the converted word document it does not convert in Spanish it is totally unreadable "gibberish"  I have tried clicking on recognizint the lenguage and do not recognize text but I still get gibberish? 

is it possible to convet files in spanish? 

Can anybody help?

Thanks

Olga