If a value is entered into any of these fields, or the character composition fields, then each of the results returned must match that value. The results shown are the logical AND (set intersection) of the results found by each input field.

Use * to match zero or any number of characters.
小* matches all words beginning with 小.
*小* matches all words with a 小.
Use + to match any one or more characters.
Use ? to match any single character.
Use [12] to match the characters '1' or '2'.

Try this link for more information about regular expressions.

For pinyin search enter tone numbers, (pin1yin1) not tone marks (pīnyīn). There are no spaces between syllables, and the search is case insensitive.

One character in the result must be a component of one of the characters in this box. If you are only interested in single characters, set both the maximum and minmimum hanzi length to 1.

One character in the result must be composed of one of the characters in this box. If you are only interested in single characters, set both the maximum and minmimum hanzi length to 1.

The maximum and minimun length of the hanzi results returned. Set both the max and min to 1 if you only want to see single character words.

Whether or not to display a full or truncated definition alongside the results. The alternative is to just show a list of hanzi words.

The results are filtered so that they must be in one of the HSK levels that are checked. If no boxes are checked, HSK filtering is ignored.

Results sorted by frequency show the most frequent words first. Pinyin sorting should obey the most authoritative rules that I could find about pinyin ordering. Hanzi sorting uses the unicode code point to sort the results.