Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhin ve du snippets" » "nhin viet du snippets", "nhien va du snippets", "nhin ve su snippets", "nhin te du snippets", "nhin va du 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: (((("nhin ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhin ve du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhin ve du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhin ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.