Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung thi n2 slippers" » "dung tai n2 slippers", "dung tri n2 slippers", "dung chi n2 slippers", "dung thi nu slippers", "dung thi n2 slippery", "dung thi n2 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: (((("dung thi n2 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung thi n2 slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung thi n2 slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung thi n2 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.