Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh tra cuu snippets" » "anh trac cuu snippets", "anh ta cuu snippets", "thanh tra cuu snippets", "anh tra cau snippets", "anh trau cua snippets", "anh 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: (((("anh 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: (((("anh tra cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh tra cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh tra cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.