Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao wang cac snippets" » "hao tang cac snippets", "chao yang cac snippets", "hao quang cac snippets", "hao bang cac snippets", "hao hang cac snippets", "hao dang 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 wang 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 wang cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao wang cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao wang cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.