Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi giam cac snippets" » "loi giai cac snippets", "doi nam cac snippets", "doi gian cac snippets", "doi giai cac snippets", "doi giam sat 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: (((("doi giam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi giam cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi giam cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi giam cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.