There are three different types of search available:
• INCLUSIVE: To search for any keyword in any position. Eg black encaustic
• EXCLUSIVE: To search for ALL keywords in any position. Eg black+encaustic
• EXACT: To search for an exact phrase, use quotes. Eg "black encaustic"

Note: Do not place EXCLUSIVE searches inside an EXACT search because whatever is inside the quotes is searched for as literal content. Eg "black+encaustic" will not yield the desired results.