Perhaps you should try some spelling variations:
"luong qua dat snippets" » "luong quan dat snippets", "duong qua dat snippets", "luong cua dat snippets", "luong quy dat snippets", "luong qua da snippets", "luong qua dan snippets", "luong qua dat 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"luong qua dat snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( luong qua dat snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("luong qua dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.