Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"trinh he van grippers" » "trinh han van grippers", "trinh hoa van grippers", "trinh thi van grippers", "trinh le van grippers", "trinh ho van grippers", "trinh ha van grippers", "trinh he van 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: (((("trinh he van grippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh he van grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh he van grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh he van grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.