Perhaps you should try some spelling variations:
"dang va vai snippets" » "dang van vai snippets", "dang vat vai snippets", "hang va vai snippets", "dang va bai snippets", "dang va van snippets", "dang va dai snippets", "dang va vai slippers"
"using _ java snippets" » "using _ 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: "((((\"dang va vai snippets\") OR (\"using _ java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dang va vai snippets ) OR ( using _ java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dang va vai snippets") OR ("using _ java snippets"))) OR ("locating bug code snippets"))*.