Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ten luat cac snippets" » "ten lua cac snippets", "hien luat cac snippets", "tang luat cac snippets", "ten luat can snippets", "ten luat cau snippets", "ten xuat cac 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: (((("ten luat cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ten luat cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ten luat cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ten luat cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.