Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tac trong co snippets" » "tac trong code snippets", "cay trong co snippets", "hoc trong co snippets", "tac trong ca snippets", "tac trong cong snippets", "tac trong cuoc 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: "((((\"tac trong co snippets\") OR (\"dung java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( tac trong co snippets ) OR ( dung java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tac trong co snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.