Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van chi 2016 slippers" » "van tri 2016 slippers", "van chien 2016 slippers", "luan chi 2016 slippers", "van chat 2016 slippers", "van chi 2016 slippery", "van chi 2016 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: (((("van chi 2016 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van chi 2016 slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van chi 2016 slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van chi 2016 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.