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