Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong ke cac snippets" » "dong ke code snippets", "dong kem cac snippets", "dong ket cac snippets", "dong ky cac snippets", "dong ke cau snippets", "dong ve cac snippets", "dong de cac 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: (((("dong ke cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong ke cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong ke cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong ke cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.