Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tong cong » trong cong, cong cong, dung cong
danh toan » anh toan, dan toan, dang toan
manh toan » thanh toan, anh tuan, tinh toan
tinh cua » trinh cua, sinh cua, tinh chat
cua tong » cua cong, cua dong, cua nong

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 - hanh tinh cua tong cong ((danh toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tinh cua tong cong ((danh toan) OR (manh toan)) cau*.