Perhaps you should try some spelling variations:
information documentation » international documentation, information presentation, information documents
documentation problems » documentation process, augmentation problems, documentation projects
functions egfr » functions esf, functions error, functions euler
functions e.l » functions esf, functions ecole, functions euler
libris » xlibris, libri, libros

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information documentation problems ((functions e.l) or (functions egfr)) libris~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information documentation problems ((functions e.l) OR (functions egfr)) libris.
• Adding a wildcard symbol may retrieve word variants: information documentation problems ((functions e.l) or (functions egfr)) libris*.