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