Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vit lon chan snippets" » "vit long chain snippets", "vit jong chan snippets", "vit dong chan snippets", "vit con chan snippets", "biet lon chan snippets", "thit lon chan 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: (((("vit lon chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vit lon chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vit lon chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vit lon chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.