Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho van chi snippets" » "khao van chi snippets", "ho van chi snippets", "tho van chi snippets", "kho van chien snippets", "kho luan chi snippets", "kho van chat 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 van chi 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 van chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho van chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho van chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.