athens and georgiawill find only those items which contain the word "athens" and the word "georgia." A search for:
athens or georgiawill find those items which contain either the word "athens" or the word "georgia."
Keywords can be "wildcarded" using an asterisk. For example, a search for:
georg*will find all those items which contain words that begin with "georg."
You can select the number of items that will be returned in the Maximum Items to Find: box (between 10 and 100, with 40 the default). Use the List Items by:box to select how the items will be displayed, either alphabetically by title, by size (largest item first), or by score (most relevant items first based on occurrence of words in the item relative to size of the item).
Select Do Search after typing your keywords, connectors, etc. A list of documents, images, and other items will be displayed.