You can search for physical books, e-books and book chapters in LibrarySearch. Login and search in it using search words (keywords) that describe your topic, then refine your results to 'Books' and 'Book chapters' under Resource Type. If you only want online resources (e.g. e-books and online book chapters), further limit your results to 'Online' under Show Only.
Further information: Tips for using LibrarySearch
An example search:
osteopath* AND (treatment OR manipulation OR therapy OR adjustment OR alignment) AND ("low* back" OR "lumbar spine" OR spinal) AND (pain OR ache)
You can search for the following words in LibrarySearch (not case-sensitive):
Open Educational Resources (OERs) are any type of educational materials that are in the public domain and published under open licenses (i.e. Creative Commons). These resources can include books/textbooks, lecture notes, syllabi, assignments and tests.