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