Perhaps you should try some spelling variations:
"cong trinh code snippets" » "cong trinh cong snippets", "cong trinh co snippets", "cong trinh cad snippets", "cong trinh code slippers"
"dung cung dat snippets" » "dung chung dat snippets", "dung cong dat snippets", "dung ung dat snippets", "dung dung dat snippets", "dung vung dat snippets", "dung cuong dao snippets", "dung cung dat slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: "((((\"cong trinh code snippets\") OR (\"dung cung dat snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( cong trinh code snippets ) OR ( dung cung dat snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cong trinh code snippets") OR ("dung cung dat snippets"))) OR ("locating bug code snippets"))*.