First, see Help Center: What should I do if no one answers my question? and familiarize yourself with the bounty system.
Of course, in order to take advantage of it, you first have to gain some reputation points by contributing to the site.
Also, there is a nice answer by Tim Post on Stack Overflow Meta who summarized plenty of useful suggestions for struggling users like you:
Bounties are a great way to accomplish this, I've also found the following useful:
- Sharing a link to my question on Twitter (might be more useful to some than others)
- Politely asking folks in a chat room related to what you're working with if they know the answer to your question
- Linking to the question in other places you're communicating with other programmers about your problem
- Blogging about the problem and linking to the question