Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tung van tri snippets" » "trung van tri snippets", "tang van tri snippets", "dung van tri snippets", "tung van tai snippets", "tung van thi snippets", "tung van toi 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 ("tung van tri snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tung van tri snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tung van tri snippets"))) or ("locating bug core snippets"))*.