Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dan long snippets" » "thi dan dong snippets", "thi dan ong snippets", "thi van long snippets", "thi doan long snippets", "thi lan long snippets", "thi dai long 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 long 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 long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dan long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dan long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.