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