Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh viet su slippers" » "anh viet su slippers", "ninh viet su slippers", "nang viet su slippers", "danh viet suu slippers", "danh viet sau slippers", "danh viet tu slippers", "danh viet su slippery", "danh viet 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: (((("danh viet 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: (((("danh viet su slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh viet su slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh viet su slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.