Perhaps you should try some spelling variations:
"dung tuan tu snippets" » "duong tuan tu snippets", "dung luan tu snippets", "dung quan tu snippets", "dung tuan thu snippets", "dung tran tu snippets", "dung toan tu snippets", "dung tuan tu 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 tuan tu 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 tuan tu snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( dung tuan tu snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("dung tuan tu snippets"))) or ("locating bug code snippets"))*.