Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho nhan can snippets" » "cho phan can snippets", "cho nha can snippets", "cho thanh can snippets", "cho nhan chan snippets", "cho nhan dan snippets", "cho nhan van 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: (((("cho nhan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho nhan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho nhan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho nhan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.