Perhaps you should try some spelling variations:
"dang vat java snippets" » "dang van java snippets", "dong vat java snippets", "dang nhat java snippets", "dang vat va snippets"
"dung cfd code snippets" » "dung cho code snippets", "dung cua code snippets", "dung co code 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: (((("dang vat java snippets") or ("dung cfd code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang vat java snippets") OR ("dung cfd code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dang vat java snippets ) or ( dung cfd code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat java snippets") or ("dung cfd code snippets"))) or ("locating bug core snippets"))*.