Perhaps you should try some spelling variations:
"dung tri trinh snippets" » "dung tra trinh snippets", "dung thi trinh snippets", "dung tri tinh snippets", "dung tai trinh snippets", "dung tren trinh snippets", "nhung tri trinh snippets", "dung tri trinh slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung code 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: "((((\"dung tri trinh snippets\") OR (\"dung dung code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung tri trinh snippets ) OR ( dung dung code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung tri trinh snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets"))*.