Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tram cua snippets" » "hoi trac cua snippets", "doi giam cua snippets", "doi nam cua snippets", "doi tam cua snippets", "doi trau cua snippets", "doi tranh cua 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 tram cua 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 tram cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tram cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tram cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.