Perhaps you should try some spelling variations:
"dun luong cac snippets" » "dung luong cac snippets", "du luong cac snippets", "duc luong cac snippets", "dun luong cuoc snippets", "dun luong va snippets", "dun luong tai snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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: (((("dun luong cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun luong cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun luong cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun luong cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.