Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh nhan ao snippets" » "doanh nhan ao snippets", "thanh nhan ao snippets", "benh nhan ao snippets", "danh nhan tao snippets", "danh nhan mo snippets", "danh nhan co 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 nhan ao 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 nhan ao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh nhan ao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh nhan ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.