Perhaps you should try some spelling variations:
"dung cach cua snippets" » "dung cac cua snippets", "dung sach cua snippets", "dong cach cua snippets", "dung cach dua snippets", "dung canh cua snippets"
"dung cau code snippets" » "dung chau code snippets", "dung cu code snippets", "dung cac code snippets", "dung cau cong snippets", "dung cau de snippets", "dung cfd code 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 cach cua snippets\") OR (\"dung cau code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung cach cua snippets ) OR ( dung cau code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cach cua snippets") OR ("dung cau code snippets"))) OR ("locating bug code snippets"))*.