Perhaps you should try some spelling variations:
"clinical mexicanas de medicina interna ;" » "clinicas mexicanas de medicina interna ;", "clinical medicine de medicina interna ;", "clinical mexicano de medicina interna ;", "clinical mexicana en medicina interna ;", "clinical mexicana _ medicina interna ;"
"cronica mexicana de medicina internet ;" » "cronica mexicana de mediante internet ;", "cronica mexicana de medicina integral ;", "botanica mexicana de medicina internet ;", "prensa mexicana de medicina internet ;"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("clinical mexicanas de medicina interna ;") or ("cronica mexicana de medicina internet ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("clinical mexicanas de medicina interna ;") OR ("cronica mexicana de medicina internet ;"))*.
• Removing quotes may allow a broader search: (( clinical mexicanas de medicina interna ; ) or ( cronica mexicana de medicina internet ; ))*.