Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho noi so snippets" » "cho moi so snippets", "cho doi so snippets", "che noi so snippets", "cho noi bo snippets", "cho noi co 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 noi so 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 noi so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho noi so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho noi so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.