Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hon hanh cho snippets" » "hong hanh cho snippets", "hon nhanh cho snippets", "hoc hanh cho snippets", "hon danh cho snippets", "hon han cho snippets", "hon hang cho 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: (((("hon hanh cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hon hanh cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hon hanh cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hon hanh cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.