Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh phap ve snippets" » "dinh phap ve snippets", "ban phap ve snippets", "danh nhan ve snippets", "danh phap va snippets", "danh pha ve snippets", "danh phan 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: (((("danh phap 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: (((("danh phap ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh phap ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh phap ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.