Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"toc cai cach snippets" » "toc loi cach snippets", "toc tai cac snippets", "toc va cach snippets", "toc cao cach snippets", "toc dai cach snippets", "toc thai cach snippets"
"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: (((("toc cai cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc cai cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc cai cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc cai cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.