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