Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"lich danh du snippets" » "lich danh code snippets", "tich danh du snippets", "minh danh du snippets", "dich anh du snippets", "lich danh dau snippets", "lich danh tu snippets", "lich dinh du 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: (((("lich danh du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lich danh du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( lich danh du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich danh du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.