You did right thing. But maybe you have deleted some more ‘ ‘ character in the code of search.php. If you delete it, the site would error when running like what you see.
‘To search type here and hit enter’
will be replaced with
‘Another language meaning – what you want‘
Do not delete ‘ ‘ (it’s important, make the code right.
<input type="text" class="search" name="s" onblur="if(this.value=='')this.value='<?php _e('To search type here and hit enter','hueman'); ?>';" onfocus="if(this.value=='<?php _e('To search type here and hit enter','hueman'); ?>')this.value='';" value="<?php _e('To search type here and hit enter','hueman'); ?>" />