Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toi toan cao snippets" » "boi toan cao snippets", "gioi toan cao snippets", "bai toan cao snippets", "toi toan ban snippets", "toi toan tap 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: (((("toi toan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toi toan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toi toan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toi toan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.