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