innodb_ft_min_token_size = 1
innodb_ft_enable_stopword = off
ft_min_word_len = 1

SELECT * FROM animals
WHERE MATCH (story)
AGAINST ('+lazy +dog' IN BOOLEAN MODE);

+----+--------+--------------------------------------------------+
| id | animal | story                                            |
+----+--------+--------------------------------------------------+
|  1 | dog    | Brown fox jumped over lazy dog                   |
|  4 | dog    | Grey flea jumped on lazy dog                     |
|  3 | dog    | Black ox jumped near lazy dog in the land of OZ. |
|  2 | dog    | White fox jumped on lazy dog                     |
+----+--------+--------------------------------------------------+

SELECT * FROM animals
WHERE MATCH (story)
AGAINST ('+on +lazy +dog' IN BOOLEAN MODE);

Empty set (0.00 sec)

SELECT * FROM animals
WHERE MATCH (story)
AGAINST ('+dog +OZ' IN BOOLEAN MODE);

Empty set (0.00 sec)