Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dan hanh cac snippets" » "dang hanh cac snippets", "dan khanh cac snippets", "dan thanh cac snippets", "dan hang cac snippets", "dan hanh cat snippets", "dan nhanh cay 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: (((("dan hanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan hanh cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan hanh cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan hanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.