Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doan van chi snippets" » "doan van code snippets", "doan va chi snippets", "hoang van chi snippets", "luan van chi snippets", "doan van chien snippets", "doan luan chi snippets", "doan van chat 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 van chi 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 van chi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doan van chi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan van chi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.