Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhap cong le snippets" » "phap cong le snippets", "phap chong le snippets", "phan cong le snippets", "nhap cuong le snippets", "nhap cong li snippets", "nhap hong le 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: (((("nhap cong le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhap cong le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhap cong le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhap cong le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.