Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan che noi snippets" » "phan che code snippets", "han che noi snippets", "phap che noi snippets", "phan thi noi snippets", "phan he noi snippets", "phan ghep noi snippets", "phan nghe noi 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: (((("phan che noi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan che noi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan che noi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan che noi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.