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