Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang doc dan slippers" » "nang luc dan slippers", "nang duoc dan slippers", "nang hoc dan slippers", "nang doc dao slippers", "nang doc dan slippery", "nang doc dan 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: (((("nang doc dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang doc dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang doc dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang doc dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.