Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai tan cong snippets" » "dai tan cuong snippets", "dai tran cong snippets", "dai toan cong snippets", "dai han cong snippets", "hai tan cong snippets", "dai tai cong 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: (((("dai tan cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dai tan cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai tan cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai tan cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.