A method for generating data enabling searching for content complements intended for terminals of a telecommunication network is provided. In one embodiment, the method includes selecting content from a terminal, generating identification information of the selected content, sending a marker generation request to a content complement server, and, in response to receiving the request, generating and saving a marker at the content complement server. The request includes the user's identification data and the identification information of the selected content. The marker includes the user's identification data, the identification information of the selected content, and search characteristics data enabling an additional search for content related to the selected content. A system, a terminal, and a server associated with the method are also provided.