Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"ke dan zhang grippers" » "ke yan zhang grippers", "ke lidan zhang grippers", "ke danh thang grippers", "le dan zhang grippers", "ke dan zhang slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets", "locating bug code slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("ke dan zhang grippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ke dan zhang grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ke dan zhang grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ke dan zhang grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.