Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao duc nghe snippets" » "dao duc nghia snippets", "dao duc ngoc snippets", "dao day nghe snippets", "giao duc nghe snippets", "tao duoc 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: (((("dao duc 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: (((("dao duc nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao duc nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao duc nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.