Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh viet da snippets" » "danh viet code snippets", "anh viet da snippets", "ninh viet da snippets", "nang viet da snippets", "danh viet dao snippets", "danh viet dat snippets", "danh viet ha snippets"
"python using java snippets" » "python using data 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: (((("danh viet da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh viet da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh viet da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh viet da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.