Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi dap cach snippets" » "doi dan cach snippets", "doi tap cach snippets", "doi phap cach snippets", "hoi dap cach snippets", "doi dau cach snippets", "do dap cach snippets"
"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 dap cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi dap cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi dap cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi dap cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.