Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan hanh de snippets" » "nhan nhanh de snippets", "nhan thanh de snippets", "nhat hanh de snippets", "nhan hanh ve snippets", "nhan hanh kem 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: (((("nhan hanh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan hanh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan hanh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan hanh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.