Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"data van duc slippers" » "data phan duc slippers", "dang van duc slippers", "dao van duc slippers", "data van duy slippers", "data van du slippers", "data tran duc slippers", "data van duc slippery", "data van duc 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 duc 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 duc slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( data van duc slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("data van duc slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.