term frequency outweighs exact phrase match

[alxsss]

Hello,

I use solr 3.5 with edismax. I have the following issue with phrase search. For 
example if I have three documents with content like

1.apache apache
2. solr solr
3.apache solr

then search for apache solr displays documents in the order 1,.2,3 instead of 
3, 2, 1 because term frequency in the first and second documents is higher than 
in the third document. We want results be displayed in the order as  3,2,1 
since the third document has exact match.

My request handler is as follows.

<requestHandler name="search" class="solr.SearchHandler" >
<lst name="defaults">
<str name="defType">edismax</str>
<str name="echoParams">explicit</str>
<float name="tie">0.01</float>
<str name="qf">host^30  content^0.5 title^1.2</str>
<str name="pf">host^30  content^20 title^22 </str>
<str name="fl">url,id, site ,title</str>
<str name="mm">2&lt;-1 5&lt;-2 6&lt;90%</str>
<int name="ps">1</int>
<bool name="hl">true</bool>
<str name="q.alt">*:*</str>
<str name="hl.fl">content</str>
<str name="f.title.hl.fragsize">0</str>
<str name="hl.fragsize">165</str>
<str name="f.title.hl.alternateField">title</str>
<str name="f.url.hl.fragsize">0</str>
<str name="f.url.hl.alternateField">url</str>
<str name="f.content.hl.fragmenter">regex</str>
<str name="spellcheck">true</str>
<str name="spellcheck.collate">true</str>
<str name="spellcheck.count">5</str>
<str name="group">true</str>
<str name="group.field">site</str>
<str name="group.ngroups">true</str>
</lst>
<arr name="last-components">
 <str>spellcheck</str>
</arr>
</requestHandler>

Any ideas how to fix this issue?

Thanks in advance.
Alex.