Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trai dan mo snippets" » "trai dat mo snippets", "trai doanh mo snippets", "tran dang mo snippets", "trai dan mon snippets", "trai dan so snippets", "trai fan mo 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: (((("trai dan mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trai dan mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trai dan mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trai dan mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.