Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan chat hoc snippets" » "dan chat code snippets", "van chat hoc snippets", "dan chan hoc snippets", "ban chat hoc snippets", "dan chat hoa snippets", "dan chat thom snippets", "dan cho 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: (((("dan chat 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: (((("dan chat hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan chat hoc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan chat hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.