No query error - but query doesn't return data?

Question

SELECT
    b.id as b_id,
    b.maxhits as b_maxhits,
    b.maxklik as b_maxkli,
    b.maxviewsprday as b_maxviewsprday
FROM banner b
    JOIN
        bannerhits bl
            ON
                b.id = bl.bannerid
                AND
                bl.userid = '".$this->userid."'
    JOIN
        bannerhits blog
            ON
                b.id = blog.bannerid
    JOIN
        bannerklik bk
            ON
            b.id = bk.bannerid
    WHERE
        (
            b.placement = '".$place."'
            AND
            b.usertype IN ('".$usertype."', '')
            AND
            b.userpostalcode LIKE ',".$postcode.",'
            AND
                (
                b.userage LIKE ',".$ageYears.",'
                OR
                b.userage IS NULL
                )
            AND
            b.maxviewsprday IS NULL
        )
        OR
        b.remainingshow = '1'
    GROUP BY
        bl.id,
        bk.id,
        blog.id
    HAVING
        (b.maxhits > count(blog.id) OR b.maxhits = '0')
        AND
        (b.maxklik > count(bk.id) OR b.maxklik = '0')
        AND
        (b.maxviewsprday > count(bl.id) OR b.maxviewsprday = '0')
    ORDER BY
        b.remainingshow ASC
    LIMIT
        1

Some guys helped me out on this query.. But now the problem is, that it doesn't return any rows.. I have created this row:

id  bannertitle bannersrc   bannerurl   placement   usertype    userage userpostalcode  maxviewsprday   maxhits maxklik activefrom  activeuntil remainingshow   dato
8   Hej          ""         ""          0           ""            ""    ""          0           0   0       0000-00-00 00:00:00 0000-00-00 00:00:00 1   0000-00-00 00:00:00