Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam thi doan snippets" » "dam thai doan snippets", "dam thi hoan snippets", "dam thi loan snippets", "dan thi doan snippets", "dao thi doan snippets", "pham thi doan 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: (((("dam thi doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam thi doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam thi doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam thi doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.