Perhaps you should try some spelling variations:
"cuon doanh cao snippets" » "cuon danh cao snippets", "cho doanh cao snippets", "von doanh cao snippets", "cuon doanh co snippets", "cuon doanh bao snippets", "cuon doanh cho snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cuon doanh cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon doanh cao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuon doanh cao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon doanh cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.