Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cay tao voi snippets" » "cau tao voi snippets", "cai tao voi snippets", "cay cao voi snippets", "cay tao boi snippets", "cay tao hoi snippets", "cay dao voi 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: (((("cay tao 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: (((("cay tao voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cay tao voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cay tao voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.