Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"hoc sach su snippets" » "hoc sinh su snippets", "hoc cac su snippets", "hoc anh su snippets", "hoc cach su snippets", "hoc sach tu snippets", "hoc sach uu snippets", "hoc sach su slippers"
"locating bug code snippets" » "locating bug code slippers", "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 sach su snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( hoc sach su snippets ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hoc sach su snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.