Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong duoc co snippets" » "cong duoc code snippets", "cong cuoc co snippets", "dong duoc co snippets", "cong duc co snippets", "cong duoc hoc snippets", "cong duong co snippets", "cong duoc hoi 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: (((("cong duoc co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong duoc co snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong duoc co snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong duoc co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.