Perhaps you should try some spelling variations:
"dung danh toan snippets" » "dung danh code snippets", "dung doanh toan snippets", "dung dan toan snippets", "dung dang toan snippets", "dung manh toan snippets", "dung anh toan snippets"
"locating bug core snippets" » "locating bug code snippets"
"hang java java snippets" » "hang va java 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 danh toan snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung danh toan snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung danh toan snippets ) or ( hang java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung danh toan snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))*.