Perhaps you should try some spelling variations:
tecnico administrativo » derecho administrativo, marco administrativo, acto administrativo
centro administrativo » control administrativo, contrato administrativo, acto administrativo
acts economicas » areas economicas, bases economicas, actores economicos
de derechos » los derechos
1 derechos » 1 derecho, en derechos, los derechos

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((centro administrativo) OR (tecnico administrativo)) acts economicas ((1 derechos) or (de derechos))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((centro administrativo) OR (tecnico administrativo)) acts economicas ((1 derechos) OR (de derechos)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((centro administrativo) OR (tecnico administrativo)) acts economicas ((1 derechos) or (de derechos))".
• Adding a wildcard symbol may retrieve word variants: ((centro administrativo) OR (tecnico administrativo)) acts economicas ((1 derechos) or (de derechos))*.

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