Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den hanh tot snippets" » "den thanh tot snippets", "dan hanh tot snippets", "deu hanh tot snippets", "den hanh noi snippets", "den hanh tu snippets", "den hanh hoa 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: (((("python using java snippets") or ("den hanh tot snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("den hanh tot snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( den hanh tot snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("den hanh tot snippets"))) or ("locating bug code snippets"))*.