Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can khach de snippets" » "van khanh de snippets", "vay khach de snippets", "cua khach de snippets", "can khach deu snippets", "can cach de snippets", "can hanh de 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: (((("can khach 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: (((("can khach de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can khach de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can khach de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.