Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi tra cho snippets" » "hoi trac cho snippets", "khoe tre cho snippets", "thi tra cho snippets", "khoi trang cho snippets", "khoi tra chat snippets", "khoi toan cho 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: (((("khoi tra cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi tra cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi tra cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi tra cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.