Perhaps you should try some spelling variations:
"cha me doan snippets" » "cha me code snippets", "cha le doan snippets", "cha ket doan snippets", "cha de doanh snippets", "chat me doan snippets", "chua me doan snippets", "chan me doan snippets"
"locating bug core snippets" » "locating bug code 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: (((("cha me doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cha me doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cha me doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cha me doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.