Perhaps you should try some spelling variations:
"cong chua chay snippets" » "cong cua chay snippets", "cong chuc chay snippets", "con chua chay snippets", "cong chua may snippets", "cong chu chan snippets", "cong cua cha 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 chua chay 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 chua chay snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong chua chay snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong chua chay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.