Perhaps you should try some spelling variations:
2.2 institutions » 2.2 institution, 3.2 institutions, 7.2 institutions
26 institutions » 2.6 institutions, 6 institutions, 16 institutions
c institutions » c institution, 8 institutions, 7 institutions

Try widening your search to All Fields.

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: %22associations%((((2.2 institutions) OR (26 institutions))) OR (c institutions))%29 etc %_ bolivia%22.
• Adding a wildcard symbol may retrieve word variants: %22associations%((((2.2 institutions) or (26 institutions))) or (c institutions))%29 etc %_ bolivia%22*.