Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"tao trinh co slippers" » "tao tinh co slippers", "tho trinh co slippers", "giao trinh co slippers", "tao trinh do slippers", "tao trinh cong slippers", "tao trinh hoa slippers", "tao 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: (((("tao 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: (((("tao trinh co slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao trinh co slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao trinh co slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.