Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung tan cong snippets" » "dung toan cong snippets", "duong tan cong snippets", "dung tai cong snippets", "dung tan cuong snippets", "dung tran 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: (((("dung tan cong 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 tan cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tan cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tan cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.