Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"ke doc trong slippers" » "ke duoc trong slippers", "ke dot trong slippers", "ke hoc trong slippers", "ke do trong slippers", "me doc trong slippers", "ke doi trong slippers", "ke doc trong 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: (((("ke doc trong slippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ke doc trong slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ke doc trong slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ke doc trong slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.