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