So far as surveys are concerned, I don't have much idea whether those are legitimate options for earning or not. I would recommend researching properly before you get involved with it, so that your efforts can be rightly paid off.
Apart form that, you can have other options like working as a translator or a transcriptionist. Not to forget, both the jobs require a few skills to to be able to do them. However, they definitely offer a good source of income. To get started, you can go through these posts:-