Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa dung du snippets" » "hoc dung du snippets", "khoa cong du snippets", "khoa dung de snippets", "khoa dung cu snippets", "khoa dung cua 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: (((("khoa dung du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa dung du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa dung du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa dung du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.