Perhaps you should try some spelling variations:
"python using real snippets" » "python using metal snippets", "python using raw snippets", "python using real slippers"
"pham le dat snippets" » "phan le dat snippets", "pham lan dat snippets", "pham le dan snippets", "pham de dat snippets", "pham le dac snippets", "pham le dat slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("pham le dat snippets") or ("python using real snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham le dat snippets") OR ("python using real snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham le dat snippets ) or ( python using real snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham le dat snippets") or ("python using real snippets"))) or ("locating bug code snippets"))*.