There are two reasons that you may not get any articles back from your search: an error occurred with the search engine program itself, or there may not be any articles matching the search criteria.
If your search was executed properly but did not return any articles, the message "Your search retrieved zero articles." will be displayed at the top of the screen, along with some suggestions for narrowing your search. In this case, the search can be broadened as described above to redefine the search. Appropriate use of wildcards with search terms, or author names for which you are not sure of the exact spelling, can also help. There is also the possibility that no articles matching your interests are in the journal's collection.
When a true search error occurs, the message "There was a problem with our search system." will appear at the top of the screen. This most commonly means that too many articles were returned. This will happen if a common word (for example, and or the) is used. Single letters not included in a phrase will return similar errors. Finally, note that parentheses and quotation marks come in sets: if only one is used, an error will result. Ensure that you are not using common words or single characters; if the error cannot be resolved, send us feedback describing the problem.