Perhaps you should try some spelling variations:
"publicas mexicanas de medicina interna ;" » "publica mexicana de medicina interna ;", "republica mexicanas de medicina interna ;", "musicas mexicanas de medicina interna ;", "publicas mexicano de medicina interna ;", "publicas mexicana en medicina interna ;", "publicas mexicana _ medicina interna ;"
"prensa mexicana de medicina interna ;" » "poesia mexicana de medicina interna ;", "prensa mexico de medicina interna ;", "revista mexicana de 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: (("publicas mexicanas de medicina interna ;") or ("prensa mexicana de medicina interna ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("publicas mexicanas de medicina interna ;") OR ("prensa mexicana de medicina interna ;")).
• Removing quotes may allow a broader search: (( publicas mexicanas de medicina interna ; ) or ( prensa mexicana de medicina interna ; )).
• Adding a wildcard symbol may retrieve word variants: (("publicas mexicanas de medicina interna ;") or ("prensa mexicana de medicina interna ;"))*.