mysql> select word, hex(word) from oldword where word like 'hua%';
+----------+------------------+
| word     | hex(word)        |
+----------+------------------+
| huamanal | 6875616D616E616C |
| huã      | 6875C3A3         |
| hua      | 687561           |
+----------+------------------+
3 rows in set (0,07 sec)