Perhaps you should try some spelling variations:
"nhan ung data snippets" » "nhan using data snippets", "nhan dung dat snippets", "nhan big data snippets", "phan ung data snippets", "han ung data snippets", "nham ung data snippets", "nhan ung data slippers"
"using a code snippets" » "using a core snippets", "using a code slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "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 ("nhan ung data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("nhan ung data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( nhan ung data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("nhan ung data snippets"))) or ("locating bug code snippets"))*.