Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh du cau snippets" » "danh dau cau snippets", "danh tu cau snippets", "dinh du cau snippets", "danh cu cau snippets", "danh da cau snippets", "danh di cau 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: (((("danh du cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh du cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh du cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh du cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.