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