Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot cao cong snippets" » "mot cac cong snippets", "mot cao dang snippets", "mot cua cong snippets", "mot co cong snippets", "mot cai cong snippets", "mot cay cong 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 cao cong 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 cao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot cao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.