It can take quite a while for earnings to come in regardless of your location. This is because your hubs need time to get indexed in search engines. Your best bet, during this wait is to continue to write quality content. The more great content you write, the more money you should see. To learn some tips and tricks to writing great content, check out the learning center:
That said, after you publish a particular hub, you won't see it finding a cozy spot in the search engines for about 4 to 6 months depending on the search term and how well written you hub is. Best of luck!
Also, a trick I think you will benefit highly from is to make it so your ads show up at the top right of your hubs. Sometimes you have an image there. In order to do this, push your first image down to a lower capsule. By leaving your first text capsule devoid of images, charts, or polls or anything, you will have an ad there and that is a PRIME spot for ads.