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