Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan voi con snippets" » "nhan vo con snippets", "than voi con snippets", "nhan loai con snippets", "nhan voi cong snippets", "nhan voi chon snippets", "nhan voi can 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: (((("nhan voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan voi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan voi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.