Perhaps you should try some spelling variations:
"clinica medica de medicina interna ;" » "politica medica de medicina interna ;", "clinical medicine de medicina interna ;", "clinica juridica de medicina interna ;", "clinica medida de medicina interna ;", "clinica media de medicina interna ;", "clinica medicina de medicina interna ;"
"clinicas mexicanas de medicina interna ;" » "clinicas mexicana de medicina interna ;", "clinicas mexicano de medicina interna ;", "clinicas mexicana 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 de medicina interna ;") or ("clinicas mexicanas de medicina interna ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinica medica de medicina interna ;") OR ("clinicas mexicanas de medicina interna ;")).
• Removing quotes may allow a broader search: (( clinica medica de medicina interna ; ) or ( clinicas mexicanas de medicina interna ; )).
• Adding a wildcard symbol may retrieve word variants: (("clinica medica de medicina interna ;") or ("clinicas mexicanas de medicina interna ;"))*.