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