Perhaps you should try some spelling variations:
index apertures » coded apertures, index lectures, new apertures
berkeley index » berkeley annex, berkeley andrew, berkeley unix
berkeley sa » berkeley usa, berkeley ca, berkeley a
sa lecture » a lecture, la lecture, ca lecture

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( berkeley index apertures ) OR ( berkeley sa lecture )).
• Adding a wildcard symbol may retrieve word variants: (( berkeley index apertures ) or ( berkeley sa lecture ))*.