Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"troi cua o snippets" » "tri cua o snippets", "tro cua o snippets", "hoi cua o snippets", "troi cua bo snippets", "troi cua co snippets", "troi chua o 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: (((("troi cua o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("troi cua o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( troi cua o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("troi cua o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.