Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung dung van snippets" » "duong dung van snippets", "ung dung van snippets", "dung ung van snippets", "dung duong van snippets", "dung dung va snippets", "dung dang van 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: "((((\"using java code snippets\") OR (\"dung dung van snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung dung van snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("dung dung van snippets"))) OR ("locating bug core snippets"))*.