Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu tac de snippets" » "hieu cac de snippets", "hieu dac de snippets", "hieu tuc de snippets", "hieu tac ke snippets", "hieu tac da 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 tac 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: (((("hieu tac de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu tac de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu tac de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.