Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don pham duc slippers" » "son pham duc slippers", "duoc pham duc slippers", "cong pham duc slippers", "don pham duc slippery", "don pham duc grippers"
"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: (((("don pham duc slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don pham duc slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don pham duc slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don pham duc slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.