Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung moi lo snippets" » "dung moi code snippets", "dung mo lo snippets", "dung doi lo snippets", "dung mot lo snippets", "dung moi loc snippets", "dung moi co snippets", "dung moi la 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: (((("dung moi lo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung moi lo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung moi lo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung moi lo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.