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Is there anything I can do to boost my ranking? 10stuffs.com

Can anybody check it what is the main culprit behind my website's growth?

Here might be the reason. I had loads of unnecessary content so I given them the noindex tag. I tried to change the robot.txt file but that shouldn't be a problem in SEO. First my site had a country specific domain and then a year later I changed it to .Com, as to target globally (Mainly US). My site is ranking well in that specific country  (never been close to page 1) on page 3 almost every time. It's not ranking in other countries, despite the fact that I've not targeted it to any specific country since the domain was changed. A month ago, I deleted 404 pages and all the thin content which was indexed in the SERP and also deleted the duplicated contents and as well as the copied contents. Meanwhile I've also tried changing the headings in some of the products articles as they were causing the duplicate heading issue. I've recently switched my hosting from the UK based server to the Us based server because the last hosting has bad downtime. So far until now nothing seems to be working in my favor. I'm just tired of resolving issues and in return finding a zero result. This is my devil site: 10stuffs.com plz check it out and tell me why my site is not ranking at all and what sould I do.