Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam thi chap snippets" » "dam thi phap snippets", "dam thi cham snippets", "dam thi cap snippets", "dan thi chap snippets", "dao thi chap snippets", "pham thi chap 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 chap 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 chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam thi chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam thi chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.