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