Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan ve cho snippets" » "toan va cho snippets", "toan ke cho snippets", "toan von cho snippets", "toan ve co snippets", "toan ve che snippets", "toan de cho 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: (((("toan ve cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan ve cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan ve cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan ve cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.