Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang van soa snippets" » "dang van soa snippets", "hoang van soa snippets", "trong van soa snippets", "tang van hoa snippets", "tang van son snippets", "tang van khoa 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 van soa 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 van soa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang van soa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang van soa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.