Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi tran xoa snippets" » "thi trang xoa snippets", "thi thanh xoa snippets", "thi lan xoa snippets", "thi tran xuan snippets", "thi tran khoa snippets", "thi tran doan 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: (((("thi tran xoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi tran xoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi tran xoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi tran xoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.