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