Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong xa cac snippets" » "cong xay cac snippets", "cong xua cac snippets", "cong ha cac snippets", "cong va cac snippets", "cong ca cac snippets", "cong xa cao 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: (((("cong xa cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong xa cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong xa cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong xa cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.