Need help regarding to get rank for “Product listing Ads” on perticular keyword

[CommercePundit]

I have one project Canvas Champ and we have been running Google shopping campaign for this project and we are getting good visits from some of the keywords.

But our client has sorted out some keywords having high search volumes like “Canvas Prints” Now, We want to show our Product listing Ad for this keyword.

Let me make you aware about our past efforts:

We have set an auto target in Google Adwords for this particular product and make its bid around $8 and we have reviewed that product in listing for 2 days, but we didn’t see our Product Listing Ad on Google Search Result for this keyword.

So Now, My concern is that, How can we show our Product listing Ad on Google SERP for this particular keyword “Canvas Prints”?

Let me know if you have any confusion with my question.

It would be really appreciated if I would get valuable inputs for the same.

Thanks,