In specific domains, such as newspaper news, virtual libraries, videos or music repositories, the available specialised search engines use to offer to the users more complex interfaces than the generic ones. These interfaces allow to specify constraints about specific features of the resources being searched, as the date of an article, the price of a book or the duration of a movie. On the other hand we have traditional specialised meta-search engines, those engines that help users in their search process by automatically querying a set of specialised search engines available for a given domain. This kind of engines usually offer only a “one-field” interface to the user because of the difficulty to feature the interface particularities of each underlying specialised engine. Our approach allows to overcome this limitation without doing any presumption over the existing technologies. We have developed a practical application, an advanced news meta-search engine that could be easily adapted to cover other domains.