can't find correct match result in special words

[BigFishDreamWater]

i love this wonderful project and try to use in my work. it's nice work with english word. but when i try to match chinese words,some bug happens. there is code:

import ahocorasick
def make_AC(AC, word_set):
    for Word in word_set:
         print(Word)
         AC.add_word(Word,Word)
def issue_ahocorasick():
    key_list =["心甘情愿这个词勇敢又卑微(just for test)",
               "Test心甘情愿这个词真的又卑微又勇敢",
               "notetsgdsdf心甘情愿这个词  卑微又勇敢",
               "心甘情愿这个词sdgdsfdfdg满是卑微又勇敢"]
    AC_KEY = ahocorasick.Automaton()
    AC_KEY = make_AC(AC_KEY, set(key_list))
    AC_KEY.make_automaton()
    # test_str_list[0] is subset of test_str_list[1].
    # and test_str_list[1] match ok,but test_str_list[0] match fail. it's makes me confused.
    test_str_list = ["心甘情愿这个词","心甘情愿这个词勇敢又卑微(just for test)"]
    print("beigin >>>>>>>")
    for content in test_str_list:
        name_list = [0]
        match_length = 0
        for item in AC_KEY.iter(content): 
            print("item:",item)
            # just find the max lenth match result
            if len(item[1])>match_length:
                name_list[0]= item[1]
                match_length = len(item[1])
        # if match result exists, print match result
        if name_list[0]:
            print("【{}】--->match:{}".format(content,name_list[0]))
        else:
            print("{}:there is no match".format(content))

if __name__ == "__main__":
    `issue_ahocorasick()