Find episodes with ANY of these words. This means that you will find episodes with one or more of your words in no particular order. Example: type in the words FOOD BOMBAY with a space in between them (case is unimportant). The search finds 27 episodes that mention the word "food", "Bombay" or both (so, any episode that lists Dr. Bombay as a cast member will appear as part of the 27).

Find episodes with ALL of these words in this order. This means that you will find episodes with the phrase you type in. Example: type in FOOD BOMBAY with a space in between them (case is unimportant). The search finds no episodes that have the words "food" and "Bombay" right next to each other.

Some tips on spelling:

Upper and lower case are unimportant.
Punctuation is significant, and will be used just the way you type it in.

More examples:

To find the episode that featured Elizabeth Montgomery's stand-in in a more visible part, search for:

Melodie

Find all the episodes featuring Kasey Rogers as Louise Tate:

Kasey Rogers

Find the episode where Samantha becomes Queen of the Witches:

Queen