Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot hanh so snippets" » "mot thanh so snippets", "mot doanh so snippets", "hoc hanh so snippets", "mot anh so snippets", "mot hanh mo snippets", "mot hanh su 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: (((("mot hanh 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: (((("mot hanh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot hanh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot hanh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.