Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho dieu can snippets" » "nha dieu can snippets", "cho dieu can snippets", "nhi dieu can snippets", "nho dieu hanh snippets", "nho tiep can snippets", "nho dieu cua 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: (((("nho dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nho dieu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho dieu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.