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