Perhaps you should try some spelling variations:
"cronicas alemanas de medicina interna ;" » "cronicas americanas de medicina interna ;", "cronicas argelinas de medicina interna ;", "cronicas italianas de medicina interna ;", "cronicas alemana de medicina interna ;", "cronicas alemania de medicina interna ;", "cronicas alemana del medicina interna ;"
"cronica mexicana de medicas general ;" » "botanica mexicana de medicas general ;", "prensa mexicana de medicas general ;", "cronica mexicana de medical general ;", "cronica mexicana de medica general ;", "cronica mexicana de medico general ;", "cronica mexicana de medidas general ;", "cronica mexicana de medicos general ;", "cronica mexicana de medias general ;"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cronicas alemanas de medicina interna ;\") OR (\"cronica mexicana de medicas general ;\"))~".
• Removing quotes may allow a broader search: (( cronicas alemanas de medicina interna ; ) OR ( cronica mexicana de medicas general ; ))~.
• Adding a wildcard symbol may retrieve word variants: (("cronicas alemanas de medicina interna ;") OR ("cronica mexicana de medicas general ;"))*.