Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang bac cao snippets" » "dong bac cao snippets", "bang bac cao snippets", "dan bac cao snippets", "dang bao cao snippets", "dang bac can snippets", "dang bac cau 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: (((("dang bac 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: (((("dang bac cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang bac cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang bac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.