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