Perhaps you should try some spelling variations:
"dat thanh cay snippets" » "dao thanh cay snippets", "dat khanh cay snippets", "dang thanh cay snippets", "dat thanh tay snippets", "dat nhanh cay snippets", "dat thanh ca 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: (((("dat thanh cay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat thanh cay snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat thanh cay snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat thanh cay snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.