Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao quan doi snippets" » "dao quang doi snippets", "bao quan doi snippets", "dan quan doi snippets", "dao quan tri snippets", "dao quan li 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 quan doi 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 quan doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao quan doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao quan doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.