A typical search should take only a few seconds. If the server is very busy, the search might take longer. If your search selects a great many references, you will be shown only the first 50 of those selected.
All searches are case insensitive.
This means it does not matter whether you enter your search requests in upper or lower case letters. To narrow your search, you may enter more than one search word. For many of these words, the program automatically will search for either spelling no matter which one is entered. In most cases, the program will automatically locate instances of the abbreviation as well as the full word when the full word is entered. Specific word sequences may be selected by using the underscore character to stand for the spaces between the words, thus requiring the words to be in a specific order.