Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung quang he snippets" » "dung quang code snippets", "dang quang he snippets", "luong quang he snippets", "dung luan he snippets", "dung quan he snippets", "dung quang le snippets", "dung quang de snippets"
"hang java java snippets" » "hang va java snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hang java java snippets") or ("dung quang he snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang java java snippets") OR ("dung quang he snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hang java java snippets ) or ( dung quang he snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") or ("dung quang he snippets"))) or ("locating bug core snippets"))*.