Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi phan doc snippets" » "cho phan doc snippets", "chinh phan doc snippets", "chi nhanh doc snippets", "chi phan duoc snippets", "chi phan duc snippets", "chi than doc 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: (((("chi phan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chi phan doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi phan doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi phan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.