Perhaps you should try some spelling variations:
"chuong han code snippets" » "thuong han code snippets", "chung han code snippets", "phuong hanh code snippets", "chuong han che snippets", "chuong han cosh snippets", "chuong han code slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code 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: (((("chuong han code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chuong han code snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuong han code snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuong han code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.