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