Perhaps you should try some spelling variations:
"clinica medicina de medicina interna ;" » "clinical medicine de medicina interna ;", "fisica medicina de medicina interna ;", "clinicas mexicanas de medicina interna ;"
"clinica medica en medicina interna ;" » "politica medica en medicina interna ;", "clinical medicine en medicina interna ;", "clinica juridica en medicina interna ;", "clinica medica la medicina interna ;", "clinica media en medicina interna ;", "clinica medicina en medicina interna ;"

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