Perhaps you should try some spelling variations:
"doan va mong snippets" » "doan va code snippets", "doan va cong snippets", "doan va dong snippets", "doan va thong snippets", "doanh va mong snippets", "dan va mong snippets", "toan va mong 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: (((("doan va mong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan va mong snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doan va mong snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan va mong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.