Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"kinh hoc van slippers" » "sinh hoc van slippers", "hinh hoc van slippers", "tinh hoc van slippers", "kinh hoc dan slippers", "kinh hoc va slippers", "kinh hoc vat slippers", "kinh hoc van 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: (((("kinh hoc van slippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kinh hoc van slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kinh hoc van slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kinh hoc van slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.