Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sang cong da snippets" » "dang cong da snippets", "hang cong da snippets", "bang cong da snippets", "sang cong dan snippets", "sang cong dac snippets", "sang cong dau 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: (((("sang cong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sang cong da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sang cong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sang cong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.