Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cuon dan de snippets" » "cuon danh de snippets", "cuoi dan de snippets", "cuong danh de snippets", "cuon dan den snippets", "cuon dang de snippets", "cuon van de 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: (((("cuon dan de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon dan de snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuon dan de snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon dan de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.