Perhaps you should try some spelling variations:
"dong doanh chi snippets" » "dung doanh chi snippets", "trong doanh chi snippets", "doanh doanh chi snippets", "dong danh chi snippets", "dong doanh cho snippets", "dong doanh chu 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: (((("dong doanh chi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong doanh chi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong doanh chi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong doanh chi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.