Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung de sach slippers" » "dung he sach slippers", "dung dat sach slippers", "dung te sach slippers", "dung do sach slippers", "dung dien sach slippers", "dung de sach slippery", "dung de sach grippers"
"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 de sach slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung de sach slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung de sach slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung de sach slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.