Perhaps you should try some spelling variations:
"politica medida de medicina integrativa ;" » "politica medida de medicina alternativa ;", "politica medida de medicina intensiva ;", "politica medida de medicina integral ;", "politica mediada de medicina integrativa ;", "politica medica de medicina integrativa ;", "politica medieval de medicina integrativa ;", "politica medidas de medicina integrativa ;", "politica perdida de medicina integrativa ;", "politica medios de medicina integrativa ;"
"clinicas mexicanas de medicina interna ;" » "clinicas mexicana de medicina interna ;", "clinicas mexicano de medicina interna ;", "clinicas mexicana en medicina interna ;", "clinicas mexicanas de medicina internet ;"

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: (("politica medida de medicina integrativa ;") or ("clinicas mexicanas de medicina interna ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("politica medida de medicina integrativa ;") OR ("clinicas mexicanas de medicina interna ;")).
• Removing quotes may allow a broader search: (( politica medida de medicina integrativa ; ) or ( clinicas mexicanas de medicina interna ; )).
• Adding a wildcard symbol may retrieve word variants: (("politica medida de medicina integrativa ;") or ("clinicas mexicanas de medicina interna ;"))*.