Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet cua dan slippers" » "viec cua dan slippers", "viet ca dan slippers", "viet qua dan slippers", "viet cua dang slippers", "viet cua ban slippers", "viet cua dan slippery", "viet cua 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.

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