Perhaps you should try some spelling variations:
generales administrativos » manuales administrativos, controles administrativos, general administration
centrales administrativas » controles administrativos, contratos administrativos, centros administrativos
general administrative » general administracion, control administrativo, centro administrativo
330 economia » la economia, de economia, y economia
331 economia » la economia, de economia, y economia
en derecho » al derecho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((generales administrativos) or (centrales administrativas))) or (general administrative)) ((330 economia) or (331 economia)) en derecho~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((generales administrativos) OR (centrales administrativas))) OR (general administrative)) ((330 economia) OR (331 economia)) en derecho.
• Adding a wildcard symbol may retrieve word variants: ((((generales administrativos) or (centrales administrativas))) or (general administrative)) ((330 economia) or (331 economia)) en derecho*.