Perhaps you should try some spelling variations:
"doanh hoan ca snippets" » "doanh doanh ca snippets", "doanh khoa ca snippets", "doanh nhan ca snippets", "doanh hoan cua snippets", "doanh hoan va snippets", "doanh hoang cao 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: (((("doanh hoan ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh hoan ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh hoan ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh hoan ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.