Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"dan trinh co slippers" » "dan tinh co slippers", "van trinh co slippers", "hanh trinh co slippers", "dan trinh do slippers", "dan trinh cong slippers", "dan trinh hoa slippers", "dan trinh co grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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