Perhaps you should try some spelling variations:
"tran tuan li snippets" » "tran xuan li snippets", "tran quang li snippets", "tran thanh li snippets", "tran quan li snippets", "tran tuan le snippets", "tran thuan loi snippets", "tran tuan li slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: "((((\"tran tuan li snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( tran tuan li snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran tuan li snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.