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