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