Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi va zhang slippers" » "doi va hang slippers", "doi na zhang slippers", "doi va khang slippers", "hoi va zhang slippers", "noi va zhang slippers", "dai va zhang slippers", "doi va zhang slippery", "doi va zhang 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: (((("python using java snippets") or ("doi va zhang slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doi va zhang slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi va zhang slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi va zhang slippers"))) or ("locating bug code snippets"))*.