Perhaps you should try some spelling variations:
"tan cuong tac snippets" » "tang cuong tac snippets", "van cuong tac snippets", "van chuong tac snippets", "tan cong tac snippets", "tan tuong tac snippets", "tan cuong cac snippets", "tan cuong tac 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: "((((\"tan cuong tac snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( tan cuong tac snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tan cuong tac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.