Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi giang do snippets" » "bai giang do snippets", "thi nang do snippets", "thoi gian do snippets", "thi giang dao snippets", "thi giang o snippets", "thi giang vo 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 giang do 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 giang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi giang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi giang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.