Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang de hoc snippets" » "trang de hoc snippets", "tang le hoc snippets", "tang du hoc snippets", "tang te hoc snippets", "tang dien hoc 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 de hoc 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 de hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang de hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang de hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.