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