Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc cac de snippets" » "duoc cac de snippets", "luoc cac de snippets", "quoc cao de snippets", "quoc cach de snippets", "quoc cac du snippets", "quoc cac he 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 cac de 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 cac de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc cac de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc cac de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.