SQLITE between date different result

this is a part of my db and i want to obtain a query like this:

select * from  tb_store where data_in between '01-01-2014 00:00:00' AND '15-01-2015 23:59:59' 

but the problem is that if the value of the second data are 15-01-2015 23:59:59 (present in the table only the day) the result are ok, otherwise if the data are 01-01-2015 23:59:59 the result are empty. where is the problem?

   nome              data_in
  cioccolato         14-01-2015 13:38:36
    mascarpone       14-01-2015 13:38:36
    crema            14-01-2015 13:38:36
    pistacchio       14-01-2015 13:38:36
    nocciola         14-03-2015 13:38:36
    fior di panna    14-03-2015 13:38:36
    stracciatella    14-02-2015 13:38:36
    zucca            14-02-2015 13:38:36
    arancia          15-02-2015 13:38:36