Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"data van han slippers" » "data phan han slippers", "dang van han slippers", "dao van han slippers", "data van hanh slippers", "data van phan slippers", "data van nhan slippers", "data van han slippery", "data van han grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("data 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: (((("data van han slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( data van han slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("data van han slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.