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