Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"con cai cach snippets" » "con loi cach snippets", "con tai cac snippets", "con va cach snippets", "con cac cach snippets", "con chi cach snippets", "con coi 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: (((("con 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: (((("con cai cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con cai cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con cai cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.