Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc van tran slippers" » "duc van trang slippers", "duc van tranh slippers", "duc van tuan slippers", "duc va tran slippers", "duc tan tran slippers", "duc manh tran slippers", "duc van tran slippery", "duc van tran 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: (((("duc van tran slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc van tran slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc van tran slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc van tran slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.