Perhaps you should try some spelling variations:
"dan trinh java snippets" » "dan tinh java snippets", "van trinh java snippets", "hanh trinh java snippets"
"dung dung con snippets" » "duong dung con snippets", "ung dung con snippets", "dung ung con snippets", "dung dung cong snippets", "dung dung von snippets", "dung dung co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: "((((\"dan trinh java snippets\") OR (\"dung dung con snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dan trinh java snippets ) OR ( dung dung con snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dan trinh java snippets") OR ("dung dung con snippets"))) OR ("locating bug code snippets"))*.