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