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