Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"muc chat voi snippets" » "duoc chat voi snippets", "luc nhat voi snippets", "hoc chat voi snippets", "muc cham voi snippets", "muc chat moi snippets", "muc chat vo 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: (((("muc chat 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: (((("muc chat voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( muc chat voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("muc chat voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.