Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri tuan de snippets" » "tri quan de snippets", "tran tuan de snippets", "tri tue de snippets", "tri tuan le snippets", "tri luan de snippets", "tri toan de 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 de 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 de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri tuan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri tuan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.