Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach tu du snippets" » "sach thu du snippets", "cach tu du snippets", "sach ty du snippets", "sach tu duy snippets", "sach tu dau snippets", "sach tru du 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: (((("sach tu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach tu du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach tu du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach tu du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.