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