Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"cong tuan can snippets" » "cong tan can snippets", "cong luan can snippets", "cong thanh can snippets", "cong xuan can snippets", "cong toan can snippets", "cong tuan hoan snippets"
"locating bug core snippets" » "locating bug code snippets"

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

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