Perhaps you should try some spelling variations:
"cong cong ve snippets" » "cong dong ve snippets", "trong cong ve snippets", "dung cong ve snippets", "cong cuong ve snippets", "cong cong va snippets", "cong long ve 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: (((("cong cong ve snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong cong ve snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cong ve snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cong ve snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.