Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc hieu de snippets" » "thuc hien de snippets", "thu hien de snippets", "thuc tien de snippets", "thuc hieu ve snippets", "thuc hieu he snippets", "thuc hieu le 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: (((("thuc hieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc hieu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc hieu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc hieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.