Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao vung cac snippets" » "dao vung cac snippets", "hao hung cac snippets", "hau vung cac snippets", "hao dung cac snippets", "hao luong cac snippets", "hao cuong cac 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: (((("hao vung cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao vung cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao vung cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao vung cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.