Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap doan o snippets" » "tap doan o snippets", "hap dan o snippets", "nhap doanh o snippets", "hap doan do snippets", "hap doan _ snippets", "hap toan o 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: (((("hap doan o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hap doan o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap doan o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap doan o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.