Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat dung con snippets" » "van dung con snippets", "va dung con snippets", "viet dung con snippets", "vat dung cong snippets", "vat dung von snippets", "vat dung co 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 dung con 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 dung con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat dung con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat dung con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.