Perhaps you should try some spelling variations:
"dung trinh cham snippets" » "dung tinh cham snippets", "dong trinh cham snippets", "cong trinh cham snippets", "dung trinh chat snippets", "dung trinh chao snippets", "dung trinh han snippets"
"dung ung code snippets" » "dung trung code snippets", "dung quang code snippets", "dung chung code snippets", "dung ung co snippets"
"locating bug code snippets" » "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 trinh cham snippets\") OR (\"dung ung code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung trinh cham snippets ) OR ( dung ung code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung trinh cham snippets") OR ("dung ung code snippets"))) OR ("locating bug code snippets"))*.