Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang phu doc snippets" » "lang phu doc snippets", "tang khu doc snippets", "trang phuc doc snippets", "tang phu doi snippets", "tang phu do snippets", "tang phu loc 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 phu doc 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 phu doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang phu doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang phu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.