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