Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang cau dep snippets" » "hang dau dep snippets", "hang ca dep snippets", "nhung cau dep snippets", "hang cai dep snippets", "hang cau de snippets", "hang cau den 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: (((("hang cau dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang cau dep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang cau dep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang cau dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.