Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"va cao zhang grippers" » "va tao zhang grippers", "va hao zhang grippers", "va xiao zhang grippers", "va cac zhang grippers", "va co zhang grippers", "va dao zhang grippers", "va cao 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: (((("va cao 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: (((("va cao zhang grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va cao zhang grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va cao zhang grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.