Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao muc he snippets" » "dao duc he snippets", "dao tuc he snippets", "danh muc he snippets", "dao muc ke snippets", "dao mua he 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 muc he 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 muc he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao muc he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao muc he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.