Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho tri hoi snippets" » "khoa tri hoi snippets", "khoe tre hoi snippets", "khoa tre hoi snippets", "kho tri hoc snippets", "kho tri doi snippets", "kho tri moi 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: (((("kho tri hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kho tri hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho tri hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho tri hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.