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