Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhap xoa doi snippets" » "nhap xa doi snippets", "phap xoa doi snippets", "nhap mon doi snippets", "nhap hoa doi 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: (((("nhap xoa doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhap xoa doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhap xoa doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhap xoa doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.