Match:
Click an ingredient or effect to add it to the list of filters. Effects matching these filters will be colored blue.
Ingredients will add all of their effects to the search (and thus "matching all" isn't very useful). When 2 or 3 ingredients are added, any matched ingredients will be colored green. Also, a link to a fuller description of the potion will be shown at the bottom.
Hold down Shift and click an ingredient or effect to go to its page, which will allow you to look at its matching ingredients and all potions, ordered from most to least valuable.