Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua van da snippets" » "cua ban da snippets", "cua dan da snippets", "cua vat da snippets", "cua van dao snippets", "cua van dau snippets", "cua van dan 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: (((("cua van 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: (((("cua van da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua van da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua van da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.