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