Perhaps you should try some spelling variations:
sindicato independiente » candidato independiente (Expand Search), candidatos independientes (Expand Search), medica independiente (Expand Search)
contrato independiente » central independiente (Expand Search), contratista independiente (Expand Search), candidato independiente (Expand Search)
politica clasica » politica climatica (Expand Search), politica publica (Expand Search), politica las (Expand Search)