Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc cua hoat snippets" » "doc qua hoat snippets", "doc chuc hoat snippets", "doc luan hoat snippets", "hoc cua hoat snippets", "doi cua hoat snippets", "do cua hoat 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: (((("doc cua hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc cua hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc cua hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc cua hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.