Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang su cong snippets" » "dang su cuong snippets", "dang sua cong snippets", "dang tu cong snippets", "dan su cong snippets", "dong su cong snippets", "nang su 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: (((("dang su 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: (((("dang su cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang su cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang su cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.