Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat ve hoan snippets" » "nhat ve hoang snippets", "nhat ve hoat snippets", "nhat vu hoan snippets", "nhan ve 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: (((("nhat ve 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: (((("nhat ve hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat ve hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat ve hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.