Perhaps you should try some spelling variations:
thanh rung » thanh trung, thanh tung, thanh hung
hien xanh » hien hanh, hien nhanh, chieu xanh
rung khoa » trung khoa, dung khoa, truong khoa
khoa dung » hoc dung, khoa cong
dung cong » dung trong
tao khang » tao khoang, tao zhang, dao khang
khang cau » hang cau, khang cu, khang chan
cong tao » cong tac, cong tan, cong bao

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 rung khoa dung cong tao khang cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh rung khoa dung cong tao khang cau*.