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