Perhaps you should try some spelling variations:
"dung nhanh doc snippets" » "dung nhan doc snippets", "vung nhanh doc snippets", "dung thanh doc snippets", "dung nhanh soc snippets", "dung nhanh dong snippets", "dung nang doc snippets"
"using a code snippets" » "using a core snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("using a code snippets") or ("dung nhanh doc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("dung nhanh doc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( dung nhanh doc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("dung nhanh doc snippets"))) or ("locating bug code snippets"))*.