Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trai dan cho snippets" » "trai dat cho snippets", "trai doanh cho snippets", "tran dang cho snippets", "trai danh cho snippets", "trai san cho snippets", "trai dac cho 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 cho 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 cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trai dan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trai dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.