Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac viet da snippets" » "cach viet da snippets", "bac viet da snippets", "ca viet da snippets", "cac viet dao snippets", "cac viet dat snippets", "cac viet ha 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: (((("cac viet da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac viet da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac viet da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac viet da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.