Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mong luan co snippets" » "tong luan co snippets", "cong luan co snippets", "dong luan co snippets", "mong quan co snippets", "mong xuan co snippets", "mong luan cong 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: (((("mong luan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mong luan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mong luan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mong luan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.