Perhaps you should try some spelling variations:
"dung tiet thi snippets" » "dung thiet thi snippets", "dung viet thi snippets", "dung tieu thi snippets", "dung tiep thi snippets", "dung trieu thi snippets", "dung trien thi snippets", "dung tiet thi 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 ("dung tiet thi 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 tiet thi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( dung tiet thi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("dung tiet thi snippets"))) or ("locating bug code snippets"))*.