Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri tuan cho snippets" » "tri quan cho snippets", "tran tuan cho snippets", "tri tue cho snippets", "tri toan cho snippets", "tri tuan pho snippets", "tri trang cho 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: (((("tri tuan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tri tuan cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri tuan cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri tuan cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.