Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat lanh dep snippets" » "dat anh dep snippets", "dau lanh dep snippets", "hat lanh dep snippets", "dat canh dep snippets", "dat lanh dao snippets", "dat hanh de 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: (((("dat lanh 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: (((("dat lanh dep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat lanh dep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat lanh dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.