Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hang lon snippets" » "thi hang lon snippets", "thuc hanh lon snippets", "thu huong lon snippets", "thu hang ton snippets", "thu hang loi snippets", "thu han lon 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: (((("thu hang lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hang lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hang lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hang lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.