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