Perhaps you should try some spelling variations:
"doanh ban ca snippets" » "doanh bat ca snippets", "doanh van ca snippets", "doanh nhan ca snippets", "doanh ban cua snippets", "doanh ban can snippets", "doanh ban cam 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 ban 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 ban ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh ban ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh ban ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.