Perhaps you should try some spelling variations:
"biblioteca salvador camacho y pensamiento politico;" » "biblioteca salvador camacho y pensamiento critico;", "biblioteca calvino camacho y pensamiento politico;", "biblioteca salvador camacho el pensamiento politico;", "biblioteca salvador camargo y pensamiento politico;"
"biblioteca saavedra fajardo del pensamiento politico;" » "biblioteca saavedra fajardo del pensamiento critico;", "biblioteca saavedra fajardo de pensamiento politico;", "biblioteca saavedra fajardo e pensamiento politico;", "biblioteca saavedra fajardo en pensamiento politico;"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("biblioteca salvador camacho y pensamiento politico;") or ("biblioteca saavedra fajardo del pensamiento politico;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("biblioteca salvador camacho y pensamiento politico;") OR ("biblioteca saavedra fajardo del pensamiento politico;")).
• Removing quotes may allow a broader search: (( biblioteca salvador camacho y pensamiento politico; ) or ( biblioteca saavedra fajardo del pensamiento politico; )).
• Adding a wildcard symbol may retrieve word variants: (("biblioteca salvador camacho y pensamiento politico;") or ("biblioteca saavedra fajardo del pensamiento politico;"))*.