Advanced Search by Multiplication/Subtraction
If the search keys have a repeat of the same element, you can unify the search keys by using "×" or "*".
For example, you can search kanji characters with 4 or more "木" by inputting "木*4".
If you want to extract the part of kanji, use the subtraction(minus assignment). For example, if you need "癶" as the search key, input "登－豆".