Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tai doan snippets" » "doi thai doan snippets", "doi tap doan snippets", "doi thi doan snippets", "hoi tai doan snippets", "dai tai doan snippets", "doi tac doan 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: (((("doi tai doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi tai doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tai doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tai doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.