Perhaps you should try some spelling variations:
"lochating bug core snippets" » "locating bug core snippets", "lochating bug code snippets"
"python using java snippets" » "python using data snippets"
"hoc van dan snippets" » "hoc dan dan snippets", "hoc va dan snippets", "hoc vat dan snippets", "hoc van ban snippets", "hoc ban dan snippets", "hoc van dao 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: (((("hoc van dan snippets") or ("python using java snippets"))) or ("lochating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc van dan snippets") OR ("python using java snippets"))) OR ("lochating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc van dan snippets ) or ( python using java snippets ))) or ( lochating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc van dan snippets") or ("python using java snippets"))) or ("lochating bug core snippets"))*.