Perhaps you should try some spelling variations:
"dia trong code snippets" » "dia trong cong snippets", "dia trong co snippets", "dia trong che snippets", "da trong code snippets", "dua trong code snippets", "gia trong code snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug core snippets" » "locating bug code 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: "((((\"dia trong code snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dia trong code snippets ) OR ( dung java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dia trong code snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.