Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bug code slippers", "locating bugs code snippets"
"dung java java snippets" » "dung va java snippets"
"dan vach tran snippets" » "dan sach tranh snippets", "dan hach toan snippets", "dan sach tren snippets", "dan cach tran snippets", "dan va tran snippets", "dan bac tran 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 ("dan vach tran snippets"))) or ("locating bugs code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dan vach tran snippets"))) OR ("locating bugs code slippers")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dan vach tran snippets ))) or ( locating bugs code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dan vach tran snippets"))) or ("locating bugs code slippers"))*.