Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kho canh che snippets" » "kho tang che snippets", "thu canh che snippets", "cho can che snippets", "kho canh cha snippets", "kho hanh che snippets", "kho chinh che 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 canh che 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 canh che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kho canh che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kho canh che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.