If you search for abbreviation containing "CI", select category and the position selected is "Anywhere", then it would yield all the glossary items containing characters CI in abbreviation. This type of search is best if you are not sure about exact position.

If you are sure about the abbreviation, then type the abbreviation, select abbreviation, selecte position as at the beginning or in the end. This would narrow your search. This however, is not the case with glossary term itself. A glossary term can be best searched for a particular word or collection of words with position "Anywhere".