Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa nhat ca snippets" » "hoa chat ca snippets", "hoa nhap ca snippets", "hoa phat ca snippets", "hoa nhat cua snippets", "hoa hat ca 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: (((("hoa nhat ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoa nhat ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa nhat ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa nhat ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.