Perhaps you should try some spelling variations:
"clinicas mexicanas de medicina interna ;" » "clinicas mexicana de medicina interna ;", "clinicas mexicano de medicina interna ;", "clinicas mexicana _ medicina interna ;", "clinica mexicanas de medicina interna ;", "clinical mexicanas de medicina interna ;", "cronicas mexicanas de medicina interna ;"
"revista mexicana en medicina interna ;" » "revista mexicana de medicina interna ;", "revista mexicana la medicina interna ;"

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 de medicina interna ;") or ("revista mexicana en medicina interna ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinicas mexicanas de medicina interna ;") OR ("revista mexicana en medicina interna ;"))*.
• Removing quotes may allow a broader search: (( clinicas mexicanas de medicina interna ; ) or ( revista mexicana en medicina interna ; ))*.