Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chan tra cuu snippets" » "chan ta cuu snippets", "chan tha cuu snippets", "thanh tra cuu snippets", "chan tra cau snippets", "chan trau cua snippets", "chan trua 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: (((("chan tra cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chan tra cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chan tra cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chan tra cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.