Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai viet den snippets" » "thai viet den snippets", "mai viet den snippets", "tai viet den snippets", "hai biet den snippets", "hai viet yen snippets", "hai viet dung 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: (((("hai viet den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai viet den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai viet den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai viet den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.