Perhaps you should try some spelling variations:
"vai trong code snippets" » "vai trong cong snippets", "vai trong co snippets", "vai trong che snippets", "tai trong code snippets", "bai trong code snippets", "dai trong code snippets"
"locating bug core snippets" » "locating bug code snippets"
"using a java snippets" » "using _ 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: "((((\"using a java snippets\") OR (\"vai trong code snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using a java snippets ) OR ( vai trong code snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using a java snippets") OR ("vai trong code snippets"))) OR ("locating bug core snippets"))*.