Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hoc phap code slippers" » "hoc phap che slippers", "hoc phap cong slippers", "hoc phap coc slippers", "hoc phan code slippers", "hoc phat code slippers", "hoc pho code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 ("hoc phap code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("hoc phap code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( hoc phap code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("hoc phap code slippers"))) or ("locating bug code snippets"))*.