Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quy long cho snippets" » "huy luong cho snippets", "quan long cho snippets", "cuu long cho snippets", "quy luong cho snippets", "quy dong cho snippets", "quy rong 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: (((("quy long 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: (((("quy long cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quy long cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quy long cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.