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