Perhaps you should try some spelling variations:
"nang thuc chan snippets" » "dang thuoc chan snippets", "nhanh thuc chan snippets", "nang luc chan snippets", "nang thuc can snippets", "nang thuc nhan snippets", "nang thuc phan 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 thuc chan 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 thuc chan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang thuc chan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang thuc chan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.