Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dai trac hoc snippets" » "dai trac code snippets", "dai truc hoc snippets", "hai trac hoc snippets", "hoi trac hoc snippets", "dai toan hoc snippets", "dai thai hoc snippets", "dai toc hoc 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: (((("dai trac 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: (((("dai trac hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dai trac hoc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai trac hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.