Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cu dan slippers" » "hoc cua dan slippers", "hoc cau dan slippers", "hoc chu dan slippers", "hoc ca dan slippers", "hoc co dan slippers", "hoc cu dan slippery", "hoc cu dan 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc cu dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( hoc cu dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hoc cu dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.