Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao tinh cao snippets" » "dac tinh cao snippets", "dao minh cao snippets", "dao dinh cao snippets", "dao tinh lao snippets", "dao tinh chat snippets", "dao tinh cach 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 tinh cao 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 tinh cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao tinh cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao tinh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.