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