Less content is not gives you benefit so just create unique content in your website and upload on your website its surely gives you benefit with your website ....
i can understand the topic of your site having less content to provide to your viewers. the most i can recommend is you just recycle the content, say you have a website based on laptop computers. just copy and paste your same page, but re-write the pages so it's a different article. ya know?
you can try to create a column with ads so that you're site doesn't look empty until you get more content. If you need an add service, i suggest trafficbroker.com. You can pm/email me for more details about it.
Try to create unique and quality content for site which should get good attention from user as well as from search engine.
Huge content is not always helping. Please make your content should be keyword enriched, density should be with 2% - 5%, unique, fresh & informative.
Also it's a good idea to make sure there is a proper balance between images and text on your site. Images can take up a lot of space and make the site appear more content full Rule of gold here
Think beyond just text, you could vary the content as well - consider tables, bullet lists, images, videos etc.
I think there's no optional way of adding content. If you want get a good return from your site then you must have to add more fresh content.
Get to work and write some content for your site, or buy some from specialists (you can find some on this forum)
Rich content is of very much value after google panda update. even if you've a lot of posts but they are not help full its a crap as well, rich content plus helping content is very necessary these days.
You can always add more content, by having a look at some PLR (Private Rights Label) content and amending it for your site