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