Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban mo chon snippets" » "ban mo cho snippets", "ban mo phong snippets", "ban moi chon snippets", "ban mon chon snippets", "bang mo chon 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: (((("ban mo chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban mo chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban mo chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban mo chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.