Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro thi hoan snippets" » "tro thi hoa snippets", "tro thi hanh snippets", "tro thi hong snippets", "tao thi hoan snippets", "tro tai hoan snippets", "trong thi hoan 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: (((("tro thi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tro thi hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro thi hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro thi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.