Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao quang co snippets" » "do quang co snippets", "dat quang co snippets", "dau quang co snippets", "dao quang cao snippets", "dao quang cu snippets", "dao quan co 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 quang co 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 quang co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao quang co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao quang co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.