Perhaps you should try some spelling variations:
"tran hoang dat snippets" » "quan hoang dat snippets", "tran quang dat snippets", "tranh hang dat snippets", "tran hoang da snippets", "tran hoang dai snippets", "tran hoang dang snippets", "tran hoang dat 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: "((((\"dung java java snippets\") OR (\"tran hoang dat snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( tran hoang dat snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("tran hoang dat snippets"))) OR ("locating bug code snippets"))*.