Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chan doan di snippets" » "chan doan vi snippets", "chan doan do snippets", "chan doan dieu snippets", "phan doan di snippets", "can doan di snippets", "nhan doan di 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: (((("chan doan di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chan doan di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chan doan di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chan doan di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.