Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai dan cho snippets" » "khau dan cho snippets", "hai dan cho snippets", "thai doan cho snippets", "khai danh cho snippets", "khai san cho snippets", "khai 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: (((("khai 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: (((("khai dan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai dan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai dan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.