Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc do cho snippets" » "hoc doi cho snippets", "hoc co cho snippets", "hoc bo cho snippets", "hoc do choi snippets", "hoc dao cho snippets", "hoc do cao 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: (((("hoc do cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc do cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc do cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc do cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.