Content that shows up at the top of search results is based upon its popularity in that store. If there are a lot of albums or artists associated with the keywords you have for your album title and/or artist name, this could very well prevent your music from showing up at the top of search results. Unfortunately, we cannot manipulate the search results that are displayed in the stores. The stores themselves also lack manual control over this, as the search results are automated to show the top most relevant albums and the most popular (in regards to sales and click-throughs) among other algorithms.
One way to try and raise your album in the search results is to post the direct link to all of your fans through any social media outlet or email so that people click to your album. Increased sales and writing customer reviews will also increase its popularity.
In the future, one way to ensure higher search result placement is to find words that people may search for but are not yet being over-used in the stores.