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