Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"doanh cao do slippers" » "doanh co do slippers", "doanh bao do slippers", "doanh cho do slippers", "doanh cao dao slippers", "doanh cau do slippers", "doanh cap do slippers", "doanh cao do 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: (((("doanh cao do slippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh cao do slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh cao do slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh cao do slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.