Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac dieu don snippets" » "cac kieu don snippets", "cau dieu don snippets", "cac bieu don snippets", "cac dieu con snippets", "cac sieu don snippets", "cac dieu duong 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: (((("cac dieu don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac dieu don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac dieu don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac dieu don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.