Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi hat dan slippers" » "doi hoat dan slippers", "doi phat dan slippers", "doi tat dan slippers", "doi hat van slippers", "doi mat dan slippers", "doi nhat danh slippers", "doi hat dan slippery", "doi hat 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: (((("doi hat 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: (((("doi hat dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi hat dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi hat dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.