Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao doanh ve snippets" » "cao doanh ve snippets", "dao danh ve snippets", "dao thanh ve snippets", "dao doanh va snippets", "dao doanh vien snippets", "dao doanh van 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 ve 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 ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao doanh ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao doanh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.