Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran guang li snippets" » "tran quang li snippets", "tran giang li snippets", "tranh quang li snippets", "tran guang lu snippets", "tran kuang li snippets", "tran quang le snippets"
"dung java java snippets" » "dung va java 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 guang li snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( tran guang li snippets ) OR ( dung java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran guang li snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.