Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con cong dot snippets" » "cong cong dot snippets", "con cuong dot snippets", "bon cong dot snippets", "con cong mot snippets", "con cong dong snippets", "con cong doan 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: (((("con cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con cong dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con cong dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.