Perhaps you should try some spelling variations:
"dung cac khoi snippets" » "luong cac khoi snippets", "dung cho khoi snippets", "dung tai khoi snippets", "dung cac thoi snippets", "dung cac khoan snippets", "dung cach thoi snippets", "dung cac khoi slippers"
"dang va java snippets" » "dang van java snippets", "dang vat java snippets", "hang va java snippets", "dang java java snippets", "dang va java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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