Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cong mot snippets" » "luoc cong mot snippets", "duc cong mot snippets", "luc dong mot snippets", "luc cong dot snippets", "luc trong mot snippets", "luc cong mong 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 cong mot 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 cong mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cong mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cong mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.