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