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