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