Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"duc hanh han snippets" » "duc thanh han snippets", "duc anh han snippets", "du hanh han snippets", "duc hanh nhan snippets", "duc hanh phan snippets", "duc hanh san 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: (((("duc hanh han snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hanh han snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duc hanh han snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hanh han snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.