Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sam toan cao snippets" » "tam toan cao snippets", "sam doanh cao snippets", "bai toan cao snippets", "sam toan ban snippets", "sam 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: (((("sam 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: (((("sam toan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sam toan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sam toan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.