SQL
// make SQL query
QueryManager queryManager = workspace.getQueryManager();
// create query
String sqlStatement = "SELECT * FROM mix:title WHERE CONTAINS(jcr:title, 'tr\u00E8ma na\u00EFve')";
Query query = queryManager.createQuery(sqlStatement, Query.SQL);
// execute query and fetch result
QueryResult result = query.execute();
XPath
// make SQL query
QueryManager queryManager = workspace.getQueryManager();
// create query
String xpathStatement = "//element(*,mix:title)[jcr:contains(@jcr:title, 'tr\u00E8ma na\u00EFve')]";
Query query = queryManager.createQuery(xpathStatement, Query.XPATH);
// execute query and fetch result
QueryResult result = query.execute();