Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang quan ve snippets" » "tang luan ve snippets", "nang quan ve snippets", "tong quan ve snippets", "tang quan he snippets", "tang quan vi snippets", "tang quan va 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: (((("tang quan 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: (((("tang quan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang quan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang quan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.