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