Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan cua xo snippets" » "nhat cua xo snippets", "nhan luc xo snippets", "nhan su xo snippets", "nhan cua bo snippets", "nhan cua co snippets", "nhan cua o 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: (((("nhan cua xo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan cua xo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan cua xo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan cua xo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.