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