i read online that its can change in theme but i do not find it.
Someone tell to change the code:
replace the_excerpt(); with the_content();
where you show the post so you can see the full text post and not summary.
Displays the excerpt of the current post with the “[…]” text at the end, which is not a “read more” link. Used to directly display the excerpt, but it adds opening and closing <p> tags to the string returned by get_the_excerpt(). If you do not provide an explicit excerpt to a post (in the post editor’s optional excerpt field), it will display an automatic excerpt which refers to the first 55 words of the post’s content. Also in the latter case, HTML tags and graphics are stripped from the excerpt’s content. This template tag must be within The Loop.
Note: If the current post is an attachment, such as in the attachment.php and image.php template loops, then the attachment caption is displayed. Captions do not include the “[…]” text.
the_excerpt() vs. the_content()
Sometimes, it is more meaningful to use only the the_content() function which will decide what to display according to whether the <!–more–> quicktag was used. The <!–more–> quicktag splits a post into two parts; only the content before the tag should be displayed in listing. Remember that <!–more–> is (of course) ignored when showing a single post.