Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dan me snippets" » "thi doan me snippets", "thi lan me snippets", "thi dai me snippets", "thi dan ve snippets", "thi dan de snippets", "thi dan he 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: (((("thi dan me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi dan me snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dan me snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dan me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.