Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thue nhap ve snippets" » "thu nhap ve snippets", "tue nhan ve snippets", "thu nhat ve snippets", "thue nhat ve snippets", "thue nhan ve snippets", "thue phap ve 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 ve 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 ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thue nhap ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thue nhap ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.