Some books suggests tries as data structure for search engines to store inverted indexes. The trie store the words and at the end of the word there is a list of documents which contain that word. If I would do a search engine for anagrams, when I index the document I would not store the words as they are, but in lexicographic order (the word "bamboo" will be "abbmoo"). When performing a search I will not look for the query but for its lexicographic order version.