Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan duoc he snippets" » "phan duoc code snippets", "phan duc he snippets", "phan quoc he snippets", "nhan duoc he snippets", "phan duoc ha snippets", "phan duoc hoc snippets", "phan duoc hoi 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 duoc he 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 duoc he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan duoc he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duoc he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.