Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va cao canh snippets" » "va cao anh snippets", "va cao danh snippets", "va tao canh snippets", "va cac canh snippets", "va co canh snippets", "va dao canh 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: (((("va cao canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va cao canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va cao canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va cao canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.