Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngan danh cu snippets" » "ngan hang cu snippets", "ngan sach cu snippets", "nhan dan cu snippets", "ngan danh cau snippets", "ngan danh tu snippets", "ngan dinh cu 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: (((("ngan danh 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: (((("ngan danh cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngan danh cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngan danh cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.