Perhaps you should try some spelling variations:
"cronicas americanos de mediante internet ;" » "cronicas americanas de mediante internet ;", "colonias americanas de mediante internet ;", "chicas americanas de mediante internet ;", "cronicas americano en mediante internet ;", "cronicas americanos adn mediante internet ;", "cronicas americanos l.e mediante internet ;", "cronicas americanos de mediana internet ;"
"cronicas americana de medicina internet ;" » "cronicas americanas de medicina internet ;", "cronica mexicana de medicina internet ;", "critica americana de medicina internet ;", "cronicas americana de medicina interna ;", "cronicas americana de medicina integral ;", "cronicas america de medicina internet ;", "cronicas america del medicina internet ;"

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: (("cronicas americana de medicina internet ;") or ("cronicas americanos de mediante internet ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("cronicas americana de medicina internet ;") OR ("cronicas americanos de mediante internet ;")).
• Removing quotes may allow a broader search: (( cronicas americana de medicina internet ; ) or ( cronicas americanos de mediante internet ; )).
• Adding a wildcard symbol may retrieve word variants: (("cronicas americana de medicina internet ;") or ("cronicas americanos de mediante internet ;"))*.