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