Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc song cuu snippets" » "luc sang cuu snippets", "luc cong cuu snippets", "luc dong cuu snippets", "luc song cua snippets", "luc song ngu snippets", "luc cong cu 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 song cuu 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 song cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc song cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc song cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.