We are trying to analyse how the search and selection of partners (in international strategic alliances) influence on the development of the agreement. More specifically, we want to assess whether firms consider size and culture (both national and firm culture) as variables when selecting a partner, and what is the role of interfirm trust in the evolution of the companies' relation. For doing so, we are working on a questionnaire and would like to send it to companies with international agreements. Surprisingly, all public institutions we have asked for a database say that is a confidential information and they can't inform us which firms cooperate internationally.