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