How do I find instructions for unidentified bags of legos?

vcrowley

I thought these bags went with 7939 cargo train - but don't look anything like the instructions . Any way to search ,only have the bag number and year 2011-bags 4,7 and8.

Hoddie

Almost certainly 7939 in my opinion, just going by the number of red and yellow 1 x 6 x 5 panels alone.