Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung nen con snippets" » "dung nhan con snippets", "dung ngan con snippets", "dung tren con snippets", "dung nen cong snippets", "dung nen co snippets", "dung len con 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 nen con snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung nen con snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nen con snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nen con snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.