Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa cua me snippets" » "hoa cua me snippets", "kho cua me snippets", "khoe cua me snippets", "khoa cua mes snippets", "khoa cha me snippets", "khoa ca me 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 cua me 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 cua me snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa cua me snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa cua me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.