Perhaps you should try some spelling variations:
"tran hong dam snippets" » "tran hoang dam snippets", "tran hung dam snippets", "tran trong dam snippets", "tran khong dam snippets", "tran thong dam snippets", "tran tong dam snippets", "tran hong dam 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 hong dam snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( tran hong dam snippets ) OR ( dung java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran hong dam snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.