Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cac danh chi snippets" » "cac danh code snippets", "cac doanh chi snippets", "cac dan chi snippets", "cac dang chi snippets", "cac danh cho snippets", "cac dinh chi snippets", "cac banh chi 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: (((("cac danh chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac danh chi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cac danh chi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac danh chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.