Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"he hoc trong slippers" » "he hoc thuong slippers", "he hoc tieng slippers", "he dot trong slippers", "te hoc trong slippers", "de hoc trong slippers", "he ho trong slippers", "he hoc 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: (((("he hoc 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: (((("he hoc trong slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( he hoc trong slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("he hoc trong slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.