The Open Access Bibliography: Liberating Scholarly Literature with E-Prints and Open Access Journals is now searchable using a Google Custom Search Engine. The new search box is just before the table of contents in the bibliography’s home page. Only the bibliography sections of the document are searchable (e.g., the "Key Open Access Concepts" section is excluded).
Keep in mind when you search that you will retrieve bibliography section file titles with a single representative search result shown from that section. To see all hits in a section, click on the cached page, which shows the retrieved search term(s) in the section highlighted in yellow.