Perhaps you should try some spelling variations:
"duong danh thin snippets" » "duong manh thin snippets", "cuong danh thin snippets", "duong xanh thin snippets", "duong canh thin snippets", "duong danh thanh snippets", "duong danh thang snippets", "duong danh thin 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"

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