Perhaps you should try some spelling variations:
"dong minh cuong snippets" » "dong dinh cuong snippets", "dong manh cuong snippets", "dong minh tuong snippets", "duong minh cuong snippets", "dong kinh cuong snippets", "dong ninh cuong 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: (((("dong minh cuong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong minh cuong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong minh cuong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong minh cuong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.