Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc ngu coc snippets" » "tuc ngu coc snippets", "luc ngo coc snippets", "muc ngu coc snippets", "luc ngu hoc snippets", "luc ngu cac snippets", "luc ngu co 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: (((("luc ngu coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc ngu coc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc ngu coc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc ngu coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.