Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri bai toan snippets" » "tri bai tap snippets", "troi bai toan snippets", "tri tai toan snippets", "tri ban toan 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 bai toan 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 bai toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri bai toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri bai toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.