Perhaps you should try some spelling variations:
thanh trung » thanh tung
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
cong manh » cong danh, duong manh, cong thanh
duong van » duong va, luong va, dang van
toan cao » toan ban, toan tap

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 cua khong ((cong manh) or (duong van)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh trung cua khong ((cong manh) OR (duong van)) toan cao*.