Perhaps you should try some spelling variations:
"dong ngu java snippets" » "song ngu java snippets", "dong ngo java snippets", "cong ngu java snippets", "dong ngu va snippets"
"dung cac cong snippets" » "luong cac cong snippets", "dung cho cong snippets", "dung tai cong snippets", "dung cua cong 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 ngu java snippets") or ("dung cac cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong ngu java snippets") OR ("dung cac cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong ngu java snippets ) or ( dung cac cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong ngu java snippets") or ("dung cac cong snippets"))) or ("locating bug code snippets"))*.