Limit to peer-reviewed? have you considered selecting the 'peer-reviewed' option just below the search box?
Re-sorting your search results: your results will appear in order of relevance. You can opt to re-sort them so that they appear in date order, either starting with the most recent or oldest. To do this, select your chosen option from the 'sorted by' drop-down menu to the left of your results.
Return to the search boxes by clicking modify view (just above your results to the right).
Retrieving too few results? Try this:
Retrieving too many irrelevant results? Try the following:
With complicated searches, you may find it helpful to run separate search (each on a different concept/sub-theme) and then combine the individual sets of search results. To do this, click recent searches (just below the search boxes to the right).Here you find a list of searches from your current search session). Each search is given a number. In the top search box, enter the numbers relating to each search you wish to combine along with one of the following: AND, OR, NOT (for example, you might enter 1 AND 2). Finally, click Search.