Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can doan he snippets" » "chan doan he snippets", "tan doan he snippets", "van doan he snippets", "can toan he snippets", "can dan he snippets", "can doan thi 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: (((("can doan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can doan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can doan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can doan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.