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