Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc tong don snippets" » "hoc trong don snippets", "hoc thong don snippets", "hoc cong don snippets", "hoc song don snippets", "hoc tong son snippets", "hoc trong dong 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: (((("hoc tong don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc tong don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc tong don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc tong don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.