Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu cua lon snippets" » "hieu qua lon snippets", "dieu cua lon snippets", "bieu cua lon snippets", "hieu cua con snippets", "hieu cua hon snippets", "hieu cua loc 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 cua lon 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 cua lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu cua lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu cua lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.