Perhaps you should try some spelling variations:
"dong trinh hanh snippets" » "dong trinh thanh snippets", "dong trinh han snippets", "dong trinh anh snippets", "cong trinh hanh snippets", "dong tinh hanh snippets", "dong tranh hanh snippets"
"hanh java java slippers" » "hanh va java slippers", "hanh java java slippery", "hanh java java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("hanh java java slippers") or ("dong trinh hanh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh java java slippers") OR ("dong trinh hanh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh java java slippers ) or ( dong trinh hanh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java slippers") or ("dong trinh hanh snippets"))) or ("locating bug code snippets"))*.