Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"ton duc can snippets" » "tran duc can snippets", "tong cuc can snippets", "tinh duc can snippets", "ton duc tan snippets", "ton duy can snippets", "ton duc van snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("ton duc can snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( ton duc can snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("ton duc can snippets"))) or ("locating bug core snippets"))*.