Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung quang si snippets" » "dang quang si snippets", "luong quang si snippets", "dung luan si snippets", "dung quang soi snippets", "dung quang tri snippets", "dung quang hoi 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 quang si snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( dung quang si snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("dung quang si snippets"))) OR ("locating bug core snippets"))*.