It does not mater. the purpose is the same. That is a hack to leave the ft_min_word_len as it is (4 for example) but to enable the user to search by min 1 character. If you read there it is written.
Leave the title out of it. You need only to add them into description, at its end. You can put a sign like ----custom_fields---- or any other sign before them.
Example:
Description:
Bla bla bla ----custom_fields---- valuea : 225 , valueb : 35 , valuea1 : 225 , valueb1 : 40
When you display the description to the public, you run removeCustomFields($description);
When you save the item, you run addCustomFields($description).
You have there my example. If you can't do it by your self and no one is willing to help, you can pay a developer to do it.