Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao doanh co snippets" » "cao doanh co snippets", "dao danh co snippets", "dao thanh co snippets", "dao doanh cua snippets", "dao doanh va snippets", "dao anh co 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: (((("dao doanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao doanh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao doanh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao doanh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.