Perhaps you should try some spelling variations:
"dung cac chieu snippets" » "dung cac chien snippets", "dung cao hieu snippets", "dung cac che snippets", "luong cac chieu snippets", "dung cho chieu snippets", "dung tai chieu snippets"
"dung java java snippets" » "dung va java 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: "((((\"dung cac chieu snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung cac chieu snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cac chieu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.