Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu co can snippets" » "hieu so can snippets", "hieu bo can snippets", "hieu ca can snippets", "hieu cho can snippets", "hieu co ban snippets", "hieu co dan 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 co can 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 co can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu co can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu co can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.