Search accepts required and omitted terms, and defaults to “OR” behavior.

With “OR” behavior, a search for “columbia gorge” would return all hits for either “columbia” or “gorge”.

To require a term, use “+” (plus); this would return images of columbia gorge, and exclude images of columbia blacktail:

columbia +gorge

To omit a term, use “-” (minus); this would return all images from Washington, excluding images of Washington, D.C.:

washington -d.c.

To search a string of words as if it were a single term, wrap it in either single or double quotation marks:

"Sol Duc Falls"

To require or omit a string of words, add the “+” or “-” sign within the quotes. This would yield only images of the Sol Duc River:

 olympic "+sol duc river"