Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc cach da snippets" » "cuoc cach da snippets", "quoc cac da snippets", "quoc sach da snippets", "quoc cach dua snippets", "quoc cach de snippets", "quoc cach ta 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: (((("quoc cach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc cach da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc cach da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc cach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.