Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung 1 sach slippers" » "dung _ sach slippers", "dung o sach slippers", "dung 319 sach slippers", "dung 5 sach slippers", "dung a sach slippers", "dung 1 sach slippery", "dung 1 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 1 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 1 sach slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung 1 sach slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung 1 sach slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.