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