Perhaps you should try some spelling variations:
instituciones economicas » investigaciones economicas, instituciones tecnologicas, instituciones academicas
economicas nacional » economica nacional, economia nacional, economico nacional
mercadeo relacional » mercadeo internacional
mirada relacional » diagrama relacional, marco relacional, mirada internacional
trama relacional » diagrama relacional, teoria relacional, tiempo relacional
mirada regional » martha regional, mirada profesional, empirica regional
instituto trama » instituto para, instituto ramon, instituto tomas

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( instituciones economicas nacional ) OR ((( instituto ((mirada regional) OR (((mirada relacional) OR (mercadeo relacional)))) ) OR ( instituto trama relacional ))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( instituciones economicas nacional ) or ((( instituto ((mirada regional) or (((mirada relacional) OR (mercadeo relacional)))) ) or ( instituto trama relacional ))))~".
• Adding a wildcard symbol may retrieve word variants: (( instituciones economicas nacional ) or ((( instituto ((mirada regional) or (((mirada relacional) OR (mercadeo relacional)))) ) or ( instituto trama relacional ))))*.