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