Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan dao voi snippets" » "nhan dan voi snippets", "nhan tao voi snippets", "nhan dai voi snippets", "nhan da voi snippets", "nhan dao noi snippets", "nhan do 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: (((("nhan dao 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: (((("nhan dao voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan dao voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan dao voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.