embedded text not getting highlighted

Hi Janne and Experts,

While searching for a text, only the exactly matching keywords are being  
highlighted. For example if I search for key word 'java' and there exists a  
page with following contents

saa_java_sasasasas_ususjavajapanitaly

the first occurrence of 'java' starting from 5th char is highlighted

but the second occurrence of 'java' starting from 24th char ...is not  
highlighted

Please tell me how to fix this.



Thanks and regards,
Pushker Chaubey