Perhaps you should try some spelling variations:
"nang thuong cad snippets" » "hang thuong cad snippets", "nang truong cad snippets", "dang thuong cad snippets", "nang thong cad snippets", "nang thuong chau snippets", "nang thuong mai 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: (((("nang thuong cad snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang thuong cad snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang thuong cad snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang thuong cad snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.