Perhaps you should try some spelling variations:
canh toanh » canh tranh, manh toan, danh thanh
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
toanh cua » doanh cua, tranh cua, toan cua
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
doan » doanh, dan, toan

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 - canh toanh cua thong cong tan chan doan~.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh toanh cua thong cong tan chan doan*.