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