Perhaps you should try some spelling variations:
"cuong danh toc snippets" » "cuon danh toc snippets", "huong dan toc snippets", "cuong linh toc snippets", "cuong dan toc snippets", "cuong danh hoc snippets", "cuong danh thuc 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 ("cuong danh toc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("cuong danh toc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( cuong danh toc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("cuong danh toc snippets"))) or ("locating bug code snippets"))*.