Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat cua cao snippets" » "mat cua cao snippets", "bat cua cao snippets", "dat cua cao snippets", "vat cua cac snippets", "vat cu cao snippets", "vat cua cay 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: (((("vat cua cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vat cua cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat cua cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat cua cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.