Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"giang don chat snippets" » "giang son chat snippets", "gian don chat snippets", "giang duong chat snippets", "giang doc chat snippets", "giang cong chat snippets", "giang dinh chat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dung java java snippets") or ("giang don chat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("giang don chat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( giang don chat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("giang don chat snippets"))) or ("locating bug code snippets"))*.