For structured literature searching you should begin with SCOPUS and then try Web of Science and Proquest Social Science Premium which are different collections of academic journals and other academic literature.
SCOPUS is a multidisciplinary collection including Geobase which has over 2 million journal articles.
Proquest searches a broad range of social science related academic journals and other academic sources of information.
JSTOR contains the full-text of many of the classic journals, some as far back as the 1880s.
The monitoring and search service for global research publications provides access to the British Library's Electronic Table of Contents of current journals and conference proceedings from 1993 to date, and is updated on a daily basis. You can search for citations of journal articles and conference proceedings; set up, modify and delete email alert; set up RSS feeds for journals.
This service makes it easy to keep up-to-date with newly published scholarly material by enabling them to find, display, store, combine and reuse thousands of journal tables of contents from multiple publishers.