Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach dan voi snippets" » "bach dang voi snippets", "bac dan voi snippets", "bach van voi snippets", "bach dan hoi snippets", "bach ban voi snippets", "bach da voi 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: (((("bach dan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bach dan voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach dan voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach dan voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.