Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"when tan cua snippets" » "when can cua snippets", "phan tan cua snippets", "wei tan cua snippets", "when than cua snippets", "when tang cua snippets", "when toan 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: (((("when tan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("when tan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when tan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when tan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.