1. keywords; variant word endings
* = truncation symbol/wildcard; child* = child, childs, children, childhood, childish...
on the left, limit to scholarly/peer reviewed articles
2. narrow your focus by adding another search term:
london gentrific* immigra*
3. advanced search; use quotes to search two or more words as a phrase:
"urban renewal: (keywords)
4. use official subject headings: