Perhaps you should try some spelling variations:
"danh viet thong snippets" » "danh vien thong snippets", "danh viet huong snippets", "danh viet trung snippets", "anh viet thong snippets", "ninh viet thong snippets", "nang viet thong snippets", "danh viet thong slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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