Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang vat voi snippets" » "dang van voi snippets", "dong vat voi snippets", "dang nhat voi snippets", "dang sat voi snippets", "dang vat doi snippets", "dang vat moi 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: (((("dang vat voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang vat voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang vat voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.