Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tran minh don snippets" » "tran dinh don snippets", "van minh don snippets", "xuan minh don snippets", "tran minh doan snippets", "tran minh dong snippets", "tran minh son snippets"
"locating bug core snippets" » "locating bug code 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 ("tran minh don snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tran minh don snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tran minh don snippets"))) or ("locating bug core snippets"))*.