Perhaps you should try some spelling variations:
politica mexicana » politico mexicano, politica mexico, politica medica
plastica mexicana » latina mexicana, plata mexicana, climatica mexicana
cronica mexicana » botanica mexicana, prensa mexicana
en medicina » de medicina, la medicina
interna » internet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((politica mexicana) or (plastica mexicana))) or (cronica mexicana)) en medicina interna ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((politica mexicana) OR (plastica mexicana))) OR (cronica mexicana)) en medicina interna ;.
• Adding a wildcard symbol may retrieve word variants: ((((politica mexicana) or (plastica mexicana))) or (cronica mexicana)) en medicina interna ;*.