Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khop danh do snippets" » "hop danh do snippets", "kho danh do snippets", "khoan danh do snippets", "khop dang do snippets", "khop danh co snippets", "khop danh di 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: (((("khop danh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khop danh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khop danh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khop danh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.