Perhaps you should try some spelling variations:
"dung hoc sinh snippets" » "dong hoc sinh snippets", "dung thuoc sinh snippets", "trung hoc sinh snippets", "dung hoc sinh slippers", "dung hoc dinh snippets", "dung hoc minh snippets", "dung hoc kinh snippets"
"dung dataea code snippets" » "dung dataea core snippets", "dung dataea code slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung dataea code snippets") or ("dung hoc sinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dataea code snippets") OR ("dung hoc sinh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dataea code snippets ) or ( dung hoc sinh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dataea code snippets") or ("dung hoc sinh snippets"))) or ("locating bug code snippets"))*.