Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi hoi hoc snippets" » "phi hoi code snippets", "phi loi hoc snippets", "khi hoi hoc snippets", "phi doi hoc snippets", "phi hoa hoc snippets", "phi khoa hoc snippets", "phi hoi chuc 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: (((("phi hoi hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi hoi hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phi hoi hoc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi hoi hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.