Re: need help where to look next
Most likely his naturalization petition was misfiled.
We know for sure that the surname is STRANSKY (Slavic spelling). Most of the STRANSKYs that came thru Ellis Island were coming from historical region Bohemia, Austria
Some STRANSKYs in Slovak Republic's phone book.
Much more STRANSKYs in Czech Republic. http://phone.quick.czhttp://phone.quick.cz but no way to pinpoint a place of birth of your ancestor.