The "contains minimally" live dictionary search finds Scrabble® words that contain, at minimum, all of the letters specified, and then some, in any order. This search is sensitive to the frequency of letters in your input. For example, if you request the following: iiiiiz, the resultant words will have at least 5 i's, and a z (e.g. initialization).
Sort the results by length to find words that are very close to, or slightly longer than, your requested letters.