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