Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat moi toc snippets" » "nha moi toc snippets", "nhat mpsi toc snippets", "nhap mon toc snippets", "nhat moi loc snippets", "nhat moi thoi 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 moi toc 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 moi toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat moi toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat moi toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.