The topics of this research cover all phases of expert identification process in a context of information monitoring. Identify scientists for technological expertise is relatively easy through infometric analysis. However, lots of scientists residing in developing countries still remains a challenge. How to proceed then since the largest part of them does not appear in bibliographic databases ? This question raises two problematics : firstly, how a firm has the necessity to find such experts and what is the utility of this ? Secondly, cross-cultural factor must be taken into account and represents a key of success to integrate foreign experts from developing countries into internal expertise teams of the firm. We take the case of Vietnamese experts as example, pointing out cultural characteristic features and difficulties we encountered relating to language and data treatment. We propose a computer treatment of a database, using Natural Language processing to identify experts and get a visual rendering of experts localization. A corollary aspect of our approach is to redefine the role and the responsabilities of information watcher regarding a cross-cultural environment.