Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi viet ve snippets" » "dai viet ve snippets", "hoi viet ve snippets", "oi viet ve snippets", "doi biet ve snippets", "doi viet va snippets", "doi 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: (((("doi 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: (((("doi viet ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi viet ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi viet ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.