Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan bai dan slippers" » "phan ba dan slippers", "phan dai dan slippers", "phan bac dan slippers", "phan ban dan slippers", "phan bai san slippers", "phan bai dan slippery", "phan bai dan 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 bai dan 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 bai dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan bai dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan bai dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.