Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi vo cung snippets" » "doi so cung snippets", "doi ve cung snippets", "doi xo cung snippets", "doi voi cung snippets", "doi bo cung snippets", "doi va cung 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 vo cung 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 vo cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi vo cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi vo cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.