Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc ly toan snippets" » "luc le toan snippets", "luc ly hoan snippets", "luc ly tran snippets", "luoc ly toan snippets", "luc y toan 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 ly toan 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 ly toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc ly toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc ly toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.