Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong van han slippers" » "cong vang han slippers", "cong san han slippers", "song van han slippers", "cong van hanh slippers", "cong van phan slippers", "cong van nhan slippers", "cong van han slippery", "cong van han 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: (((("cong van han slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong van han slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong van han slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong van han slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.