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