Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"cot hat lanh grippers" » "cot dat lanh grippers", "cot thuat lanh grippers", "cot nhat hanh grippers", "cost hat lanh grippers", "cot hat lanh slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets", "locating bug code slippers"

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: (((("cot hat lanh grippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cot hat lanh grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot hat lanh grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot hat lanh grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.