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