Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"long cua he snippets" » "luong cua he snippets", "cong cua he snippets", "dong cua he snippets", "long cua che snippets", "long cua te snippets", "long cua le 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: (((("long cua he snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("long cua he snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( long cua he snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("long cua he snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.