Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc cua nghe snippets" » "doc cua ngan snippets", "doc cua nha snippets", "doc cap nghe snippets", "hoc cua nghe snippets", "doi cua nghe snippets", "do cua nghe 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 nghe 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 nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc cua nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc cua nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.