WorldWideScience is a global science gateway comprised of national and international scientific databases and portals. WorldWideScience accelerates scientific discovery and progress by providing one-stop searching of databases from around the world (Architecture: What is under the Hood). Multilingual WorldWideScience provides real-time searching and translation of globally-dispersed multilingual scientific literature.
Although this tool improves the acquisition of data overall, and through overcoming barriers caused by linguistic differences in publishing, synonyms can still be lost to translations. Moreover, select sources appear to demonstrate structural or informational representation issues causing incorrect hits to be returned, even with high-specificity of search terms.
No specific help, but very easy to use and self-explanatory