Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra chat chi snippets" » "tran chau chi snippets", "tran nhat chi snippets", "hoa chat chi snippets", "tra chat cho snippets", "tra chat khi snippets", "tra chat thai 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: (((("tra chat chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra chat chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra chat chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra chat chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.