Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
van dung » van dong, xay dung, tin dung
vat dung » va dung, viet dung, mat duong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - thanh trung ((van dung) or (vat dung)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh trung ((van dung) OR (vat dung)) cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh trung ((van dung) or (vat dung)) cong dan than cau*.