Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho vit hoan snippets" » "cho viet hoan snippets", "cho viet hoang snippets", "cho van hoan snippets", "tho viet hoan snippets", "cho viec hoan 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: (((("cho vit hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho vit hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho vit hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho vit hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.