Perhaps you should try some spelling variations:
"using java can snippets" » "using data can snippets"
"thanh cong cac snippets" » "thanh cuong cac snippets", "thanh cong tac snippets", "thanh cong cau snippets"
"locating bug code snippets" » "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: "((((\"using java can snippets\") OR (\"thanh cong cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java can snippets ) OR ( thanh cong cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java can snippets") OR ("thanh cong cac snippets"))) OR ("locating bug code snippets"))*.