Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu am cac snippets" » "sieu am cac snippets", "hieu pham cac snippets", "thieu lam cac snippets", "hieu nam cac snippets", "hieu am ca snippets", "hieu am cat 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: (((("hieu am 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: (((("hieu am cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu am cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu am cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.