Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong viet con snippets" » "cong viet code snippets", "cong viec con snippets", "thong viet con snippets", "nang viet con snippets", "cong viet co snippets", "cong diet con snippets", "cong giet con snippets"
"dung java java snippets" » "dung 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: (((("cong viet con snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong viet con snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong viet con snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong viet con snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.