Intersection between columns of separate tables in Mysql

Question

By the book:

1 - Summarize the problem:
I’m Unable to Achieve an Intersection between columns of different tables

2 - Include details about your goal
I am building a PHP BINGO and need to realize an Intersection between two different tables in my Mysql database the column with the numbers drawn and the column with the sequence inserted in the cards.

3 - Describe current and expected results
===== EDITED EXCERPT
Let’s take a step-by-step example of what INNER JOIN did and what I expected it to do:
First we have to create two tables (follows simplified structure already with inserted values):

--
-- Estrutura da tabela `tabela_1`
--

CREATE TABLE IF NOT EXISTS `tabela_1` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `coluna_a` varchar(11) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `id` (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;


INSERT INTO `tabela_1` (`id`, `coluna_a`) VALUES
(1, '1, 2, 3');

--
-- Estrutura da tabela `tabela_2`
--

CREATE TABLE IF NOT EXISTS `tabela_2` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `coluna_b` varchar(11) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `id` (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=5 ;


INSERT INTO `tabela_2` (`id`, `coluna_b`) VALUES
(1, '1, 2, 3'),
(2, '1, 2'),
(3, '1,'),
(4, '2,'),
(5, '1, 2, 3');

In this structure we will execute the command:

--
-- Comando
-- 
SELECT coluna_a FROM tabela_2
INNER JOIN
tabela_1 ON tabela_2.coluna_b=tabela_1.coluna_a

Ball Show!!! Works!!!
Returns the values

1, 2, 3

Now let’s go to the example that does not work and returns zero query (0)
First we create the same structure, only now with different values:

--
-- Estrutura da tabela `tabela_1`
--

CREATE TABLE IF NOT EXISTS `tabela_1` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `coluna_a` varchar(500) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `id` (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=5 ;


INSERT INTO `tabela_1` (`id`, `coluna_a`) VALUES
(1, '12, 9, 6, 5, 7, 3, 15, 1, 11,');

-- --------------------------------------------------------

--
-- Estrutura da tabela `tabela_2`
--

CREATE TABLE IF NOT EXISTS `tabela_2` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `coluna_b` varchar(100) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `id` (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=5 ;

--
-- Extraindo dados da tabela `tabela_2`
--

INSERT INTO `tabela_2` (`id`, `coluna_b`) VALUES
(1, '1, 2, 3, 9, 12,'),
(2, '1, 3, 6, 7, 10,'),
(3, '3, 5, 9, 11, 15,'),
(4, '5, 6, 8, 12, 15,'),
(5, '1, 7, 11, 12, 15,');

What I expected to return, with my deepest humility and as far as my intelligence can take me, was the following return:

3, 5, 9, 11, 15 => id=3
1, 7, 11, 12, 15 => id=5