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