Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"xuan cac cau snippets" » "xuan cac code snippets", "xuan can cau snippets", "xuat cac cau snippets", "xuan bach cau snippets", "xuan cac mau snippets", "xuan bac cau snippets", "xuan ca cau snippets"
"python using java snippets" » "python using data 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: (((("xuan cac cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan cac cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( xuan cac cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan cac cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.