Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"
"using ph cham snippets" » "using pre cham snippets", "using a cham snippets", "using _ cham snippets", "using phuc cham snippets", "using thi cham snippets", "using khi cham 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 (\"using ph cham snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( using ph cham snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("using ph cham snippets"))) OR ("locating bugs code snippets"))*.