Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan nam cau snippets" » "dan nam cau snippets", "hoang nam cau snippets", "doan va cau snippets", "doan nam cao snippets", "doan nam cac snippets", "doan nam ca 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 nam cau 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 nam cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan nam cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan nam cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.