Perhaps you should try some spelling variations:
"nhung phuc co snippets" » "nhung khuc co snippets", "nhung phu co snippets", "nhung phun co snippets", "nhung thuc co snippets", "nhung phuc hoi snippets", "nhung phuc 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: (((("nhung phuc co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung phuc co snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung phuc co snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung phuc co snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.