Perhaps you should try some spelling variations:
"tung dan cong snippets" » "tung dan code snippets", "dung dan cong snippets", "huong dan cong snippets", "trung dai cong snippets", "tung dang cong snippets", "tung van cong snippets", "tung dan dong snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung using java snippets" » "dung ung java snippets", "dung sinh java snippets", "dung uong java snippets", "dung using data snippets"

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

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