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