Perhaps you should try some spelling variations:
"luc danh thanh snippets" » "luc dinh thanh snippets", "luc dang thanh snippets", "luc nhanh thanh snippets", "luoc danh thanh snippets", "luc canh thanh snippets", "luan danh thanh snippets", "luc danh thanh 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: (((("dung java java snippets") or ("luc danh thanh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("luc danh thanh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( luc danh thanh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("luc danh thanh snippets"))) or ("locating bug code snippets"))*.