Perhaps you should try some spelling variations:
"dung chi trinh snippets" » "dung thi trinh snippets", "dung chi minh snippets", "dung chi binh snippets", "dung chien trinh snippets", "chung chi trinh snippets", "dung chi trinh slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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 chi trinh snippets\") OR (\"dung cho code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung chi trinh snippets ) OR ( dung cho code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung chi trinh snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets"))*.