Well, if your keyword is a one word, you can just check agenda element 
string value:
<xsl:apply-templates mode="search"
select="agendas/agenda[contains(translate(.,$UC,$lc), $Keyword)]">
</xsl:apply-templates>

Alternatively you can do this trick:
<xsl:for-each select="agendas/agenda">
	<xsl:variable name="process-it">
		<xsl:for-each select="*">
			<xsl:if test="translate(.,$UC,$lc), $Keyword">1</xsl:if>
		</xsl:for-each>
	</xsl:variable>
	<xsl:if test="$process-it != ''">
		<xsl:apply-templates select="." mode="search"/>
	</xsl:if>
</xsl:for-each>

-- 
Oleg

guoqi zheng wrote:
> Dear Sir,
> 
> I have below filter function using XSLT .
> ---------------------------------------------------------------------------------------
>     <xsl:apply-templates mode="search" 
> select="agendas/agenda[contains(translate(intro,$UC,$lc), $Keyword) or 
> contains(translate(title,$UC,$lc), $Keyword)]">
>     </xsl:apply-templates>
> ----------------------------------------------------------------------------------------
> XML is an agenda list which contains many fields. an example is given beloe.
> 
> ---------------------------------------------------------------------------------------
> <agendas>
> <agenda id=1>
> <title>title of it</title>
> <intro>some intro text here </intro>
> <location>america</location>
> <members>someone, me </members>
> <remarks>some remarkds </remarks>
> <schedule>content of the event </schedule>
> </agenda>
> </agendas>
> ----------------------------------------------------------------------------------------------
> 
> In above example, I use apply-templates, contains to filter data, and I use 
> keyword "or" to search multiple fields now, but this isn't a good solution. 
> because I need to search into many element. in above example, I only search 
> "intro" and "title".
> 
> How can I search all elements? I try "node()", but it does not work out?
> 
> Regards,
> 
> Guoqi Zheng 
> 
>