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