Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi cong hat slippers" » "doi song hat slippers", "noi cong hat slippers", "moi cong hat slippers", "doi cong nhat slippers", "doi cong chat slippers", "doi cong ha slippers", "doi cong hat slippery", "doi cong hat 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 cong hat 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 cong hat slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi cong hat slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi cong hat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.