Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat minh cu snippets" » "pham minh cu snippets", "nha kinh cu snippets", "nhan sinh cu snippets", "nhat minh cau snippets", "nhat dinh cu snippets", "nhat minh tu 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: (((("nhat minh cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat minh cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat minh cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat minh cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.