WordPress hacked? Interesting observation but can't display

I run a wordpress blog here: https://goo.gl/3ohk5

But for some reason when I type:
site:upperhos t.com prescription (take out the space between s and t)
in google.com I see over 100 links representing urls with text I’ve never seen before.

Anyone know how this happened and if this issue had been resolved yet? And how can I prevent this from happening in future? I’ve hire a wordpress expert but he said everything looks fine and I am not 100% confidence it work yet. I even use google agent to view the blog and it looks fine.

Happy holidays and thanks all for your help