Boolean OR is the default search logic. Search for phrases by enclosing words within quotation marks. There is an option to show only the URL and size. Simple and Custom interfaces are available. The Simple interface includes options to search for sounds or pictures.
Documentation is very brief.
Boolean OR is the default search logic. The advanced interface allows the searcher to specify how many of the words, from one to seven, or all, to match. However, even with this option selected, Lycos will search as if Boolean OR was selected, but will rank the results by placing at the top of the list those documents that contain at least the number of words specified. Results are ranked by relevance , but the documentation does not enumerate the ranking criteria used. However, these terms are not quantitatively defined in the Lycos documentation.