Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu keo cho snippets" » "lieu khoa cho snippets", "lien ket cho snippets", "hieu kem cho snippets", "lieu ke cho snippets", "lieu keo chi snippets", "lieu khoe cho 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: (((("lieu keo 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: (((("lieu keo cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu keo cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu keo cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.