Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu danh su slippers" » "ngu anh su slippers", "ngu dan su slippers", "ngan danh su slippers", "ngu dang su slippers", "ngu danh tu slippers", "ngu danh su slippery", "ngu danh su 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: (((("ngu danh su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu danh su slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu danh su slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu danh su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.