Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi cong lo snippets" » "noi cong lo snippets", "voi cong lo snippets", "tai cong lo snippets", "moi cong lon snippets", "moi cong so snippets", "moi cong co 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: (((("moi cong lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi cong lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi cong lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi cong lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.