Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lanh hai con snippets" » "manh hai con snippets", "thanh hai con snippets", "lang chai con snippets", "lanh phai con snippets", "lanh bai con snippets", "lanh hai son 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: (((("lanh hai 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: (((("lanh hai con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lanh hai con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lanh hai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.