As more and more content is digitized, readers need better tools to sift through the voluminous material. Earlier this week, DeepDyve launched an online toolbox designed to help readers search by whole sentences, paragraphs, or entire articles.

At DeepDyve, users can search the "deep web" through more complex search strings like "Human cases of swine influenza." Readers can also highlight pieces of text within a particular document, and search for similar documents without even leaving the page.

Here's more from the company release: "DeepDyve is a search engine that was developed to scour the depths of the so-called Deep Web, the vast collection of information-rich content that is largely overlooked by today's traditional search engines. Since the company's launch in September 2008, DeepDyve has worked closely with major publishers, building an index with hundreds of millions of pages that showcases content from the industry's most respected research organizations, academic institutions and professional associations."