Perhaps you should try some spelling variations:
"dang vinh java snippets" » "dang dinh java snippets", "dang sinh java snippets", "dang tinh java snippets", "dang trinh java snippets"
"dung cho can snippets" » "dung cho cac snippets", "dung cho phan snippets", "dung cho 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: (((("dang vinh java snippets") or ("dung cho can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang vinh java snippets") OR ("dung cho can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang vinh java snippets ) or ( dung cho can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vinh java snippets") or ("dung cho can snippets"))) or ("locating bug code snippets"))*.