Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"le doan mong snippets" » "le doan cuong snippets", "le doan duong snippets", "le doan huong snippets", "le dan mong snippets", "ly doanh mong snippets", "le hoang mong 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 mong 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 mong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le doan mong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le doan mong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.